#include <bits/stdc++.h>
using namespace std;

#define int long long

const int N = 1e6 + 9;

int k, x;

int mn = 1e18, mx = -1e18;
int res = 0;

void backtrack (int i){
    if (mn != 1e18 && mn * x <= mx) return;
    if (i == k + 1){
        res++;
        return;
    }
    for (int add = 1; add <= k; add++){
        int oldmn = mn, oldmx = mx;
        mn = min (mn, add); mx = max (mx, add);
        backtrack (i + 1);
        mn = oldmn; mx = oldmx;
    }
}

signed main (){
    ios_base::sync_with_stdio (false);
    cin.tie (NULL);
    cout.tie (NULL);
    cin >> k >> x;
    backtrack (1);
    cout << res;
}