Number of (n+2) X (4+2) 0..3 arrays with every 3 X 3 subblock row and column sum not equal to 1 3 4 6 or 7 and every 3 X 3 diagonal and antidiagonal sum equal to 1 3 4 6 or 7.
A252239
Number of (n+2) X (4+2) 0..3 arrays with every 3 X 3 subblock row and column sum not equal to 1 3 4 6 or 7 and every 3 X 3 diagonal and antidiagonal sum equal to 1 3 4 6 or 7.
Terms
- a(0) =4708a(1) =43848a(2) =331884a(3) =1179792a(4) =11206944a(5) =84935088a(6) =301990464a(7) =2868905088a(8) =21743273664a(9) =77309413632a(10) =734439412224
External references
- oeis: A252239