Today, I got really bored. So I decided to try to figure out how JaGex got the exp table for RuneScape. After realizing that it was too gay trying to do it mathematically, I decided to look it up.

Exp =
[ Level -1
[size=25]Σ[/size] ( n + (300*2^(n/7)))
n = 1 ] /4

Or, the summation from n=1 to Level minus 1 of n plus the product of 300 times two to the power of n over 7 all over 4

Then I put it into an alias. Hope this helps

alias rsk {
  if ($1 < 1 ) || ($1 > 99 ) { halt }
  var %w 1 | var %q $1 | var %e
  while (%q != %w) {
    inc %e $calc(%w + $floor($calc((300 * 2^( %w /7)))))
    inc %w 1
  }
  return $floor($calc(%e /4))
}