T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 2 3 4 6 or 7 and every 3X3 column and antidiagonal sum not equal to 2 3 4 6 or 7.

A252407

T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 2 3 4 6 or 7 and every 3X3 column and antidiagonal sum not equal to 2 3 4 6 or 7.

Terms

    a(0) =458a(1) =661a(2) =293a(3) =983a(4) =442a(5) =319a(6) =1551a(7) =774a(8) =688a(9) =426a(10) =2689a(11) =1157a(12) =1515a(13) =1224a(14) =631a(15) =4582a(16) =2489a(17) =2555a(18) =3302a(19) =2414a(20) =964a(21) =7662a(22) =5060a(23) =7425a(24) =6231a(25) =8346a(26) =5061a(27) =1529a(28) =13777a(29) =8307

External references