T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with no 3X3 subblock having three equal diagonal elements or three equal antidiagonal elements, and new values 0..1 introduced in row major order.

A204398

T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with no 3X3 subblock having three equal diagonal elements or three equal antidiagonal elements, and new values 0..1 introduced in row major order.

Terms

    a(0) =144a(1) =648a(2) =648a(3) =2952a(4) =4050a(5) =2952a(6) =13448a(7) =27378a(8) =27378a(9) =13448a(10) =61336a(11) =175232a(12) =259808a(13) =175232a(14) =61336a(15) =279752a(16) =1131008a(17) =2196608a(18) =2196608a(19) =1131008a(20) =279752a(21) =1276088a(22) =7311488a(23) =19698336a(24) =25233408a(25) =19698336a(26) =7311488a(27) =1276088a(28) =5820872a(29) =47258642

External references