T(n,k)=Number of (n+1)X(k+1) 0..5 arrays with every 2X2 subblock having the absolute values of all six edge and diagonal differences no larger than 1.

A234184

T(n,k)=Number of (n+1)X(k+1) 0..5 arrays with every 2X2 subblock having the absolute values of all six edge and diagonal differences no larger than 1.

Terms

    a(0) =76a(1) =388a(2) =388a(3) =1978a(4) =3908a(5) =1978a(6) =10120a(7) =39098a(8) =39098a(9) =10120a(10) =51886a(11) =392664a(12) =771710a(13) =392664a(14) =51886a(15) =266434a(16) =3949718a(17) =15322566a(18) =15322566a(19) =3949718a(20) =266434a(21) =1369642a(22) =39781838a(23) =304760768a(24) =604124712a(25) =304760768a(26) =39781838a(27) =1369642a(28) =7046416

External references