****d={}

for i in range (1,10**6 + 1) :

d[i]=int(i * ( 3*i - 1 ) /2)

n,k=list(map(int,input().split())

for i in range(k+1,n) :

if ispentagonal(d[i]-d[i-k]) or ispentagonal(d[i]+d[i-k]) :

print(d[i])