#include <iostream>
using namespace std;

int main()
{
    unsigned long long N, K;
    cin >> N >> K;

    int count = 0;

    //! 1 <= a, b, c , d <= N
    //! ab + bc + cd + da = K 
    for (unsigned long long a = 1; a <= N; ++a) {
        for (unsigned long long b = 1; b <= N && a * b + b + 1 + a <= K; ++b) {
            for (unsigned long long c = 1; c <= N && a * b + b * c + c + a <= K; ++c) {
                //! d = (K - ab - bc) / (a + c);
                if ((K - a * b - b * c) % (a + c) == 0) {
                    int d = (K - a * b - b * c) / (a + c);
                    if (d <= N) {
                        // cout << a << ' ' << b << ' ' << c << ' ' << d << endl;
                        ++count;
                    }
                } 
            }
        }
    }

    cout << count << endl;

    return 0;
}