#include <cstdio>
#include <cstring>
#include <iostream>
#include <string>
#include <cmath>
#include <bitset>
#include <vector>
#include <map>
#include <set>
#include <queue>
#include <deque>
#include <algorithm>
#include <complex>
#include <unordered_map>
#include <unordered_set>
#include <random>
#include <cassert>
#include <fstream>
#include <utility>
#include <functional>
#include <time.h>
#include <stack>
#include <array>
#include <list>
#include <atcoder/all>
#define popcount __builtin_popcount
using namespace std;
using namespace atcoder;
typedef long long ll;
typedef pair<int, int> P;
using ull=unsigned long long;
map<ll, ull> dp;
int main()
{
    int n;
    ll k;
    cin>>n>>k;
    dp[k]=1;
    for(int i=1; i<=n; i++){
        map<ll, ull> ndp=dp;
        for(auto p:dp){
            if(p.first>=i) ndp[p.first/i]+=p.second;
        }
        swap(dp, ndp);
    }
    ull ans=0;
    for(auto p:dp) ans+=p.second;
    ans--;
    cout<<ans<<endl;
    return 0;
}