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

A252128

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

Terms

    a(0) =9640a(1) =120600a(2) =1322632a(3) =2564965a(4) =40402457a(5) =515273273a(6) =913218432a(7) =16209952502a(8) =217606042342a(9) =371233200163

External references