Number of (n+2)X(3+2) 0..2 arrays with some row, column, diagonal or antidiagonal in every 3X3 subblock summing to 3.
A251640
Number of (n+2)X(3+2) 0..2 arrays with some row, column, diagonal or antidiagonal in every 3X3 subblock summing to 3.
Terms
- a(0) =10560127a(1) =2000922455a(2) =381543775543
External references
- oeis: A251640