Number of (5+2)X(n+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 1 3 4 6 or 7 and every 3X3 column and antidiagonal sum not equal to 1 3 4 6 or 7.
A252548
Number of (5+2)X(n+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 1 3 4 6 or 7 and every 3X3 column and antidiagonal sum not equal to 1 3 4 6 or 7.
Terms
- a(0) =13104a(1) =213120a(2) =2576592a(3) =11206944a(4) =187695936a(5) =2316305760a(6) =10519316352a(7) =177838495488
External references
- oeis: A252548