T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with no 3x3 subblock diagonal sum 0 and no antidiagonal sum 0 and no row sum 0 or 1 and no column sum 0 or 1.
A256810
T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with no 3x3 subblock diagonal sum 0 and no antidiagonal sum 0 and no row sum 0 or 1 and no column sum 0 or 1.
Terms
- a(0) =32a(1) =86a(2) =86a(3) =237a(4) =312a(5) =237a(6) =641a(7) =1167a(8) =1167a(9) =641a(10) =1731a(11) =4219a(12) =5891a(13) =4219a(14) =1731a(15) =4690a(16) =15291a(17) =28655a(18) =28655a(19) =15291a(20) =4690a(21) =12707a(22) =55798a(23) =140031a(24) =187203a(25) =140031a(26) =55798a(27) =12707a(28) =34408a(29) =203129
External references
- oeis: A256810