Number of (n+2)X(7+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 2 3 6 or 7.
A251790
Number of (n+2)X(7+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 2 3 6 or 7.
Terms
- a(0) =44792a(1) =210582a(2) =1035154a(3) =6446816a(4) =46409346a(5) =302373278a(6) =2223220200a(7) =17491571986a(8) =133178140146
External references
- oeis: A251790