Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 11110-01111 pattern in any orientation.
A147506
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 11110-01111 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =5a(6) =13a(7) =17a(8) =45a(9) =89a(10) =2453a(11) =5391a(12) =90561a(13) =234023a(14) =4542721a(15) =13430469a(16) =852217819a(17) =3057070197a(18) =235450310313a(19) =994613290405
External references
- oeis: A147506