accelerated_flat_interval

Accelerated flat interval stat is a system where growth of stat appear as both flat and accelerated per each level without involving exponential growth(which is often too fast).

function flat(level,base,add){
var r=base,m=base;
for(var i=0;i<level;i++){
r+=m;m+=add;} return r;}

example1: flat(100,50,2) =14950
example2: flat(30,20,25) =11495
example3:flat(1000,100,1)=599600