Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1100-0101-0111 pattern in any orientation.
A147204
Number of n X n binary arrays symmetric about main diagonal 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) =5a(6) =17a(7) =37a(8) =97a(9) =589a(10) =4299a(11) =27851a(12) =193127a(13) =2080835a(14) =29286959a(15) =452848509a(16) =7844143081a(17) =177658806371
External references
- oeis: A147204