T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 2 3 or 4.

A252343

T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 2 3 or 4.

Terms

    a(0) =52a(1) =108a(2) =108a(3) =234a(4) =268a(5) =234a(6) =538a(7) =810a(8) =810a(9) =538a(10) =1202a(11) =2242a(12) =2978a(13) =2242a(14) =1202a(15) =2612a(16) =6030a(17) =10154a(18) =10154a(19) =6030a(20) =2612a(21) =5706a(22) =16676a(23) =34894a(24) =43708a(25) =34894a(26) =16676a(27) =5706a(28) =12616a(29) =46154

External references