Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1100-0111-0101 pattern in any orientation.
A147218
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1100-0111-0101 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =17a(7) =27a(8) =575a(9) =1091a(10) =10073a(11) =26275a(12) =436817a(13) =1241759a(14) =99221321a(15) =359430255a(16) =57329770665a(17) =261948614931
External references
- oeis: A147218