Number of (n+2)X(3+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 2 4 5 or 7.
A251995
Number of (n+2)X(3+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 2 4 5 or 7.
Terms
- a(0) =43572a(1) =1209382a(2) =38479934a(3) =1231596986a(4) =39474106776
External references
- oeis: A251995