Number of (n+2)X(n+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000000 or 00000001.
A259634
Number of (n+2)X(n+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000000 or 00000001.
Terms
- a(0) =18a(1) =64a(2) =581a(3) =4146a(4) =44500a(5) =899557a(6) =19848497a(7) =593505391a(8) =28804661988
External references
- oeis: A259634