Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 10001-11111 pattern in any orientation.
A147085
Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 10001-11111 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =5a(5) =1a(6) =9a(7) =1a(8) =17a(9) =1a(10) =197a(11) =25a(12) =1045a(13) =149a(14) =7998a(15) =825a(16) =200321a(17) =9523a(18) =3209727a(19) =104723a(20) =72875134a(21) =1495123a(22) =3146115855a(23) =45808775a(24) =136864094359a(25) =1584020605
External references
- oeis: A147085