#include <bits/stdc++.h>
using namespace std;
vector<pair<long long, pair<long long, long long>>> quotient_ranges(long long N){
	vector<pair<long long, pair<long long, long long>>> ans;
	for (long long i = 1; i * i <= N; i++){
		ans.push_back(make_pair(N / i, make_pair(i, i)));
	}
	for (long long i = N / ((long long) sqrt(N) + 1); i >= 1; i--){
		ans.push_back(make_pair(i, make_pair(N / (i + 1) + 1, N / i)));
	}
	return ans;
}
int main(){
  int N;
  long long K;
  cin >> N >> K;
  vector<pair<long long, pair<long long, long long>>> R = quotient_ranges(K);
  reverse(R.begin(), R.end());
  int M = R.size();
  vector<vector<long long>> dp(N + 1, vector<long long>(M, 0));
  dp[0][M - 1] = 1;
  for (int i = 0; i < N; i++){
    for (int j = 0; j < M; j++){
      dp[i + 1][j] += dp[i][j];
      long long x = R[j].first / (i + 1);
      if (x > 0){
        int p = lower_bound(R.begin(), R.end(), make_pair(x, make_pair((long long) -1, (long long) -1))) - R.begin();
        dp[i + 1][p] += dp[i][j];
      }
    }
  }
  int ans = 0;
  for (int i = 0; i <= M; i++){
    ans += dp[N][i];
  }
  ans--;
  cout << ans << endl;
}