/*
状态压缩类 DP+ 计数
*/
// include file
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <cmath>
#include <cctype>
#include <ctime>
#include <iostream>
#include <sstream>
#include <fstream>
#include <iomanip>
#include <bitset>
#include <algorithm>
#include <string>
#include <vector>
#include <queue>
#include <set>
#include <list>
#include <functional>
using namespace std;
// typedef
typedef long long LL;
typedef unsigned long long ULL;
//
#define read freopen("in.txt","r",stdin)
#define write freopen("out.txt","w",stdout)
#define FORi(a,b,c) for(int i=(a);i<(b);i+=c)
#define FORj(a,b,c) for(int j=(a);j<(b);j+=c)
#define FORk(a,b,c) for(int k=(a);k<(b);k+=c)
#define FORp(a,b,c) for(int p=(a);p<(b);p+=c)
#define FORii(a,b,c) for(int ii=(a);ii<(b);ii+=c)
#define FORjj(a,b,c) for(int jj=(a);jj<(b);jj+=c)
#define FORkk(a,b,c) for(int kk=(a);kk<(b);kk+=c)
#define FF(i,a) for(int i=0;i<(a);i++)
#define FFD(i,a) for(int i=(a)-1;i>=0;i--)
#define Z(a) (a<<1)
#define Y(a) (a>>1)
const double eps = 1e-6;
const double INFf = 1e10;
const int INFi = 1000000000;
const double Pi = acos(-1.0);
template<class T> inline T sqr(T a){return a*a;}
template<class T> inline T TMAX(T x,T y)
{
if(x>y) return x;
return y;
}
template<class T> inline T TMIN(T x,T y)
{
if(x<y) return x;
return y;
}
template<class T> inline void SWAP(T &x,T &y)
{
T t = x;
x = y;
y = t;
}
template<class T> inline T MMAX(T x,T y,T z)
{
return TMAX(TMAX(x,y),z);
}
// code begin
//
//
int N,M;
#define MAXN 12
LL dp[MAXN][2050];
LL prerow[MAXN];
LL currow[MAXN];
int preten;
int curten;
void two2ten(LL A[],int &ans)
{
ans = 0;
FORi(0,M,1)
ans = ans*2+A[i];
}
void ten2two(int t,LL A[])
{
for(int i=M-1;i>=0;i--)
{
A[i] = t%2;
t/=2;
}
}
void dfs(int r,int c,int cs)
{
if(c>=M)
{
dp[r][cs] += dp[r-1][preten];
return;
}
if(prerow[c]==0 )
{
currow[c] = 1;
cs += currow[c]*(1<<(M-1-c));
dfs(r,c+1,cs);
cs -= currow[c]*(1<<(M-1-c));
currow[c] = 0;
}
if(prerow[c]==1)
{
dfs(r,c+1,cs);
}
if(c+1<M && prerow[c]==1 && prerow[c+1]==1 )
{
currow[c] = currow[c+1] = 1;
cs += currow[c]*(1<<(M-1-c)) + currow[c+1]*(1<<(M-1-c-1));
dfs(r,c+2,cs);
cs -= currow[c]*(1<<(M-1-c)) + currow[c+1]*(1<<(M-1-c-1));
currow[c] = currow[c+1] = 0;
}
}
int main()
{
read;
write;
while(scanf("%d %d",&N,&M)!=-1)
{
if(N+M==0) break;
if((N*M)&1)
{
printf("0\n");
continue;
}
// 11就表示横着
// 01就表示竖着
// dp[i][j] = sigma(dp[i-1][k]), j和k可以并存
memset(dp,0,sizeof(dp));
dp[0][(1<<M)-1] = 1;
FORi(1,N+1,1)
{
FORj(0,1<<M,1)
{
if( dp[i-1][j]==0 ) continue;
ten2two(j,prerow);
preten = j;
memset(currow,0,sizeof(currow));
dfs(i,0,0);
}
}
printf("%lld\n",dp[N][(1<<M)-1]);
}
return 0;
}