# include <bits/stdc++.h>
# define int long long
using namespace std;
const int N=1e3+5;
const int INF=0x3f3f3f3f;
int n,k,ans;
int state[N],len;
int num[N];
int dp[10][1000][100];
int getNum(int x){
	int sum=0;
	while(x){
		sum++;
		x-=(x&-x);
	}
	return sum;
}
void init(){
	for(int i = 0;i<(1<<n);i++){
		if(!(i&(i<<1))){
			state[++len]=i;
			num[len]=getNum(i);
			dp[1][len][num[len]]=1;
		}
	} 
}
signed main(){
	cin>>n>>k;
	init();;
	for(int i = 2;i<=n;i++){
		for(int j = 1;j<=len;j++){
			for(int l = 1;l<=len;l++){
				int x=state[j],y=state[l];
				if((x&y)||(x&(y<<1))||(x&(y>>1)))continue;
				for(int z = 0;z<=k-num[j];z++){
					dp[i][j][z+num[j]]+=dp[i-1][l][z];
				}
			}
		}
	}
	for(int i = 1;i<=len;i++)
		ans+=dp[n][i][k];
	cout<<ans;
	return 0; 
}