Number of (n+2)X(4+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 1 3 6 or 8.
A252626
Number of (n+2)X(4+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 1 3 6 or 8.
Terms
- a(0) =405044a(1) =5013608a(2) =118551272a(3) =2894745288a(4) =72359809802
External references
- oeis: A252626