T(n,k)=Number of (n+1)X(k+1) 0..7 arrays with every 2X2 subblock commuting with each of its horizontal and vertical 2X2 subblock neighbors.

A186490

T(n,k)=Number of (n+1)X(k+1) 0..7 arrays with every 2X2 subblock commuting with each of its horizontal and vertical 2X2 subblock neighbors.

Terms

    a(0) =4096a(1) =1709a(2) =1709a(3) =33182a(4) =4834a(5) =33182a(6) =23215a(7) =9789a(8) =9789a(9) =23215a(10) =275175a(11) =49867a(12) =269126a(13) =49867a(14) =275175a(15) =217601a(16) =91096a(17) =144828a(18) =144828a(19) =91096a(20) =217601a(21) =2199713a(22) =383152a(23) =2196353a(24) =1024481a(25) =2196353a(26) =383152a(27) =2199713a(28) =1960451a(29) =740408

External references