Little too much free time tonight.
Level 1 = 0 XP
2 = 1,000
3 = 2,000
4 = 4,000
5 = 7,000
6 = 10,000
7 = 15,000
8 = 20,000
9 = 30,000
10 = 45,000
11 = 60,000
12 = 80,000
13 = 100,000
14 = 130,000
15 = 170,000
16 = 210,000
17 = 260,000
18 = 330,000
19 = 410,000
20 = 510,000...