About level xp

Question

Need 3000 xp from lvl 13 to 14.
Need only 2000 xp from lvl 14 to 15.
Need 5000 xp from lvl 15 to lvl 16.
It's look wired. Only me or not?

Answer 1

Surprise is comming!
80,000 xp from lvl 16 to lvl 17.

Answer 2

All have to .