Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1100-0101-0111 pattern in any orientation.
A147208
Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1100-0101-0111 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =13a(6) =45a(7) =213a(8) =1089a(9) =4693a(10) =30575a(11) =258653a(12) =2683865a(13) =36188311a(14) =599719485
External references
- oeis: A147208