Number of (n+2)X(3+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 2 3 or 4.
A252338
Number of (n+2)X(3+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 2 3 or 4.
Terms
- a(0) =234a(1) =810a(2) =2978a(3) =10154a(4) =34894a(5) =120474a(6) =413478a(7) =1423482a(8) =4910062a(9) =16902314a(10) =58156234a(11) =200254002a(12) =689660322a(13) =2374561330a(14) =8175197942a(15) =28147732742a(16) =96918297378a(17) =333703130278
External references
- oeis: A252338