Number of (n+2)X(3+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 4 or 5.
A251908
Number of (n+2)X(3+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 4 or 5.
Terms
- a(0) =910694a(1) =31829596a(2) =1346875728a(3) =55159959296
External references
- oeis: A251908