import numpy as np
def main():
    n,d = map(int,input().split())
    square = np.arange(1,n + 1) ** 2
    Add = np.bincount(np.add.outer(square,square).flatten())
    Sub = (square[:,None] - square[None,:]).flatten() + d
    Sub = Sub[Sub >= 0]
    ans = Add[Sub].sum()
    print(ans)
if __name__ =='__main__':
    main()