T(n,k) = Number of (n+2) X (k+2) 0..3 arrays with every 3 X 3 subblock row and diagonal sum equal to 1 2 4 6 or 7 and every 3 X 3 column and antidiagonal sum not equal to 1 2 4 6 or 7.

A252558

T(n,k) = Number of (n+2) X (k+2) 0..3 arrays with every 3 X 3 subblock row and diagonal sum equal to 1 2 4 6 or 7 and every 3 X 3 column and antidiagonal sum not equal to 1 2 4 6 or 7.

Terms

    a(0) =771a(1) =1107a(2) =747a(3) =1510a(4) =889a(5) =832a(6) =2443a(7) =1752a(8) =1477a(9) =1265a(10) =4284a(11) =3178a(12) =4006a(13) =3084a(14) =2162a(15) =7755a(16) =8508a(17) =8329a(18) =10585a(19) =7144a(20) =3761a(21) =13917a(22) =21797a(23) =29158a(24) =24336a(25) =33635a(26) =16327a(27) =6855a(28) =27182a(29) =42359

External references