#pragma GCC optimize(2)
#include<cstdio>
#include<cstring>
using namespace std;
typedef long long ll;
const int maxn = 1e5+5;
int n, m, yy[1<<12];
ll dp[12][1<<12];
void init() {
	ll mx = 1<<11;
	for(ll i = 0; i < mx; i++) {
		ll t = i, flag = 0;
		while(t) {
			if(t&1) flag = !flag;
			else if(flag) break;
			t /= 2;
		}
		if(!flag) yy[i] = 1;
	}
}

bool check(ll x, ll y) {
	if((x|y) != (1<<m)-1) return false;
	ll t = x&y;
	return yy[t];
}

void solve() {
	if((n*m)&1) {
		printf("0\n");
		return;
	}
	memset(dp, 0, sizeof(dp));
	ll mx = 1<<m;
    for(ll i = 0; i < mx; i++)
    	if(yy[i]) dp[1][i] = 1;
    for(int i = 2; i <= n; i++) {
    	for(ll j = 0; j < mx; j++) {
    		for(ll k = 0; k < mx; k++) {
    			if(check(j, k))
    				dp[i][j] += dp[i-1][k];
    		}
    	}
    }
    printf("%lld\n", dp[n][(1<<m)-1]);
    return;
}

int main() {
	init();
    while(scanf("%d%d", &n, &m) == 2 && n+m) {
        solve();
    }
    return 0;
}