Number of (n+2)X(4+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000000 00000001 or 00000011.
A259890
Number of (n+2)X(4+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000000 00000001 or 00000011.
Terms
- a(0) =499a(1) =1853a(2) =13373a(3) =58800a(4) =202632a(5) =954624a(6) =4585294a(7) =18966448a(8) =80737802a(9) =366501170a(10) =1610438050a(11) =6928342996a(12) =30446045528a(13) =134338881490a(14) =586149763228
External references
- oeis: A259890