T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with no 2X2 subblock trace equal to any horizontal or vertical neighbor 2X2 subblock trace.

A186141

T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with no 2X2 subblock trace equal to any horizontal or vertical neighbor 2X2 subblock trace.

Terms

    a(0) =81a(1) =558a(2) =558a(3) =3888a(4) =7686a(5) =3888a(6) =27000a(7) =107874a(8) =107874a(9) =27000a(10) =187704a(11) =1512792a(12) =3090564a(13) =1512792a(14) =187704a(15) =1304424a(16) =21216780a(17) =88110594a(18) =88110594a(19) =21216780a(20) =1304424a(21) =9066168a(22) =297562572a(23) =2513594016a(24) =5108761008a(25) =2513594016a(26) =297562572

External references