Number of (n+2)X(4+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 2 4 5 or 7.
A251996
Number of (n+2)X(4+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) =340164a(1) =19275074a(2) =1231596986a(3) =78911024030
External references
- oeis: A251996