I'm an alt-aholic so I have a few data points for you: Level 49 to 50: 454634 exp Level 25 to 26: 136490 exp Level 24 to 25: 126595 exp Level 21 to 22: 99110 exp Level 16 to 17: 60630 exp Level 14 to 15: 47800 exp Level 8 to 9: 15200 exp Level 5 to 6: 7375 exp Level 3 to 4: 3550 exp Level 1 to 2: 535 I'm also a math geek and would be happy to help with this or any other mechanics derivation projects you're working on.