Number of (n+2)X(7+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000000 00000001 or 00001001.
A259961
Number of (n+2)X(7+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000000 00000001 or 00001001.
Terms
- a(0) =4340a(1) =24719a(2) =222813a(3) =1749180a(4) =14134043a(5) =116786951a(6) =949570630a(7) =7710610630a(8) =62925603555a(9) =513205618429
External references
- oeis: A259961