T(n,k)=Number of (n+2)X(k+2) 0..7 arrays with every 3X3 subblock commuting with each horizontal and vertical neighbor 3X3 subblock.

A186574

T(n,k)=Number of (n+2)X(k+2) 0..7 arrays with every 3X3 subblock commuting with each horizontal and vertical neighbor 3X3 subblock.

Terms

    a(0) =134217728a(1) =40922a(2) =40922a(3) =2175043a(4) =3383a(5) =2175043a(6) =5261909a(7) =16401a(8) =16401a(9) =5261909a(10) =21336430a(11) =339649a(12) =335092a(13) =339649a(14) =21336430a(15) =41303124a(16) =851259a(17) =1406478a(18) =1406478a(19) =851259a(20) =41303124a(21) =62806428a(22) =1119049a(23) =2074892a(24) =17616908a(25) =2074892a(26) =1119049

External references