Endless Online EXP / TNL Chart by Shayne

Here's a simple list of each level's TNL (experience needed to level) at the start of said level. Special thanks to Shayne for the updates!

TNL at Start of Each Level (0-251)
Level 0: 133 Level 1: 931 Level 2: 2,529 Level 3: 4,925 Level 4: 8,119 Level 5: 12,112 Level 6: 16,904 Level 7: 22,494 Level 8: 28,882 Level 9: 36,071 Level 10: 44,056 Level 11: 52,840 Level 12: 62,424 Level 13: 72,806 Level 14: 83,986 Level 15: 95,965 Level 16: 108,743 Level 17: 122,319 Level 18: 136,693 Level 19: 151,868 Level 20: 167,839 Level 21: 184,609 Level 22: 202,179 Level 23: 220,547 Level 24: 239,713 Level 25: 259,678 Level 26: 280,442 Level 27: 302,004 Level 28: 324,364 Level 29: 347,525 Level 30: 371,482 Level 31: 396,238 Level 32: 421,794 Level 33: 448,148 Level 34: 475,300 Level 35: 503,251 Level 36: 532,001 Level 37: 561,549 Level 38: 591,895 Level 39: 623,042 Level 40: 654,985 Level 41: 687,727 Level 42: 721,269 Level 43: 755,609 Level 44: 790,747 Level 45: 826,684 Level 46: 863,420 Level 47: 900,954 Level 48: 939,286 Level 49: 978,419 Level 50: 1,018,348 Level 51: 1,059,076 Level 52: 1,100,604 Level 53: 1,142,930 Level 54: 1,186,054 Level 55: 1,229,977 Level 56: 1,274,699 Level 57: 1,320,219 Level 58: 1,366,537 Level 59: 1,413,656 Level 60: 1,461,571 Level 61: 1,510,285 Level 62: 1,559,799 Level 63: 1,610,111 Level 64: 1,661,221 Level 65: 1,713,130 Level 66: 1,765,838 Level 67: 1,819,344 Level 68: 1,873,648 Level 69: 1,928,753 Level 70: 1,984,654 Level 71: 2,041,354 Level 72: 2,098,854 Level 73: 2,157,152 Level 74: 2,216,248 Level 75: 2,276,143 Level 76: 2,336,837 Level 77: 2,398,329 Level 78: 2,460,619 Level 79: 2,523,710 Level 80: 2,587,597 Level 81: 2,652,283 Level 82: 2,717,769 Level 83: 2,784,053 Level 84: 2,851,135 Level 85: 2,919,016 Level 86: 2,987,696 Level 87: 3,057,174 Level 88: 3,127,450 Level 89: 3,198,527 Level 90: 3,270,400 Level 91: 3,343,072 Level 92: 3,416,544 Level 93: 3,490,814 Level 94: 3,565,882 Level 95: 3,641,749 Level 96: 3,718,415 Level 97: 3,795,879 Level 98: 3,874,141 Level 99: 3,953,204 Level 100: 4,033,063 Level 101: 4,113,721 Level 102: 4,195,179 Level 103: 4,277,435 Level 104: 4,360,489 Level 105: 4,444,342 Level 106: 4,528,994 Level 107: 4,614,444 Level 108: 4,700,692 Level 109: 4,787,741 Level 110: 4,875,586 Level 111: 4,964,230 Level 112: 5,053,674 Level 113: 5,143,916 Level 114: 5,234,956 Level 115: 5,326,795 Level 116: 5,419,433 Level 117: 5,512,869 Level 118: 5,607,103 Level 119: 5,702,138 Level 120: 5,797,969 Level 121: 5,894,599 Level 122: 5,992,029 Level 123: 6,090,257 Level 124: 6,189,283 Level 125: 6,289,108 Level 126: 6,389,732 Level 127: 6,491,154 Level 128: 6,593,374 Level 129: 6,696,395 Level 130: 6,800,212 Level 131: 6,904,828 Level 132: 7,010,244 Level 133: 7,116,458 Level 134: 7,223,470 Level 135: 7,331,281 Level 136: 7,439,891 Level 137: 7,549,299 Level 138: 7,659,505 Level 139: 7,770,512 Level 140: 7,882,315 Level 141: 7,994,917 Level 142: 8,108,319 Level 143: 8,222,519 Level 144: 8,337,517 Level 145: 8,453,314 Level 146: 8,569,910 Level 147: 8,687,304 Level 148: 8,805,496 Level 149: 8,924,489 Level 150: 9,044,278 Level 151: 9,164,866 Level 152: 9,286,254 Level 153: 9,408,440 Level 154: 9,531,424 Level 155: 9,655,207 Level 156: 9,779,789 Level 157: 9,905,169 Level 158: 10,031,347 Level 159: 10,158,326 Level 160: 10,286,101 Level 161: 10,414,675 Level 162: 10,544,049 Level 163: 10,674,221 Level 164: 10,805,191 Level 165: 10,936,960 Level 166: 11,069,528 Level 167: 11,202,894 Level 168: 11,337,058 Level 169: 11,472,023 Level 170: 11,607,784 Level 171: 11,744,344 Level 172: 11,881,704 Level 173: 12,019,862 Level 174: 12,158,818 Level 175: 12,298,573 Level 176: 12,439,127 Level 177: 12,580,479 Level 178: 12,722,629 Level 179: 12,865,580 Level 180: 13,009,327 Level 181: 13,153,873 Level 182: 13,299,219 Level 183: 13,445,363 Level 184: 13,592,305 Level 185: 13,740,046 Level 186: 13,888,586 Level 187: 14,037,924 Level 188: 14,188,060 Level 189: 14,338,997 Level 190: 14,490,730 Level 191: 14,643,262 Level 192: 14,796,594 Level 193: 14,950,724 Level 194: 15,105,652 Level 195: 15,261,379 Level 196: 15,417,905 Level 197: 15,575,229 Level 198: 15,733,351 Level 199: 15,892,274 Level 200: 16,051,993 Level 201: 16,212,511 Level 202: 16,373,829 Level 203: 16,535,945 Level 204: 16,698,859 Level 205: 16,862,572 Level 206: 17,027,084 Level 207: 17,192,394 Level 208: 17,358,502 Level 209: 17,525,411 Level 210: 17,693,116 Level 211: 17,861,620 Level 212: 18,030,924 Level 213: 18,201,026 Level 214: 18,371,926 Level 215: 18,543,625 Level 216: 18,716,123 Level 217: 18,889,419 Level 218: 19,063,513 Level 219: 19,238,408 Level 220: 19,414,099 Level 221: 19,590,589 Level 222: 19,767,879 Level 223: 19,945,967 Level 224: 20,124,853 Level 225: 20,304,538 Level 226: 20,485,022 Level 227: 20,666,304 Level 228: 20,848,384 Level 229: 21,031,265 Level 230: 21,214,942 Level 231: 21,399,418 Level 232: 21,584,694 Level 233: 21,770,768 Level 234: 21,957,640 Level 235: 22,145,311 Level 236: 22,333,781 Level 237: 22,523,049 Level 238: 22,713,115 Level 239: 22,903,982 Level 240: 23,095,645 Level 241: 23,288,107 Level 242: 23,481,369 Level 243: 23,675,429 Level 244: 23,870,287 Level 245: 24,065,944 Level 246: 24,262,400 Level 247: 24,459,654 Level 248: 24,657,706 Level 249: 24,856,559 Level 250: 25,056,208 Level 251: 25,256,656

Shayne has provided an updated EXP/TNL chart! The new chart has EXP needed per half star, expanded level exp/tnl information and more.

EXP ∙ FOR 1/2 STAR ∙ TNL Chart by Shayne (click to enlarge)