Number of (n+2)X(6+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000000 or 00000001.
A259640
Number of (n+2)X(6+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000000 or 00000001.
Terms
- a(0) =472a(1) =1964a(2) =11261a(3) =42524a(4) =182654a(5) =899557a(6) =3919925a(7) =16946757a(8) =77735408a(9) =348525973a(10) =1536576910a(11) =6895676466a(12) =30940535849a(13) =137721843827a(14) =615229646787
External references
- oeis: A259640