Number of (n+2)X(2+2) 0..2 arrays with some row, column, diagonal or antidiagonal in every 3X3 subblock summing to 3.
A251639
Number of (n+2)X(2+2) 0..2 arrays with some row, column, diagonal or antidiagonal in every 3X3 subblock summing to 3.
Terms
- a(0) =429399a(1) =29245729a(2) =2000922455a(3) =136454122643
External references
- oeis: A251639