Number of (n+2)X(5+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 1 3 6 or 8.
A252627
Number of (n+2)X(5+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) =2130874a(1) =45094726a(2) =1793890764a(3) =72359809802
External references
- oeis: A252627