#include <cstdio>
#include <map>

int main(){
	int n,k;
	std::scanf("%d",&n);
	std::scanf("%d",&k);
	std::map<int,long> h;
	h[k]=1;
	for(int i=n;i>=2;--i){
		std::map<int,long> d=h;
		for(auto v:h){
			int a=v.first/i;
			d[a]+=v.second;
		}
		h=d;
	}
	h[0]=0;
	long t=0;
	for(auto v:h){
		t+=v.second;
	}
	printf("%ld",t*2-1);
}