import sys
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines

import numpy as np

N,D = map(int,read().split())

U = 10 ** 7

sq = np.arange(1,N+1,dtype=np.int64) ** 2
xy = sq[:,None] + sq[None,:]
xy_cnt = np.bincount(xy.ravel(), minlength=U)

rhs = sq[:,None] - sq[None,:] + D

rhs = rhs.ravel(); rhs = rhs[rhs >= 0]

answer = xy_cnt[rhs].sum()
print(answer)