#define MD 998244353
ll@N,@M,@K,p=1<<N;Mint D[M][N+1][p];D[0][N][0..p]=1;rep(m,1,M)rep(n,N+1)rep(s,p)rep(t,p)D[m][min(n,__builtin_popcount(s&t))][t]+=D[m-1][n][s];wt(sum[n,K,N+1](sum[s,0,p](D[M-1][n][s])));