T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock determinant equal to some horizontal or vertical neighbor 2X2 subblock determinant.

A186218

T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock determinant equal to some horizontal or vertical neighbor 2X2 subblock determinant.

Terms

    a(0) =0a(1) =175a(2) =175a(3) =609a(4) =1969a(5) =609a(6) =3593a(7) =18873a(8) =18873a(9) =3593a(10) =15055a(11) =197619a(12) =308593a(13) =197619a(14) =15055a(15) =76263a(16) =2008031a(17) =6275745a(18) =6275745a(19) =2008031a(20) =76263a(21) =353985a(22) =20738153a(23) =116461359a(24) =255375977a(25) =116461359a(26) =20738153a(27) =353985a(28) =1729733a(29) =213108423

External references