Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 10000-11111-00001 pattern in any orientation.
A147068
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 10000-11111-00001 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =7a(7) =9a(8) =21a(9) =27a(10) =607a(11) =1167a(12) =17769a(13) =40363a(14) =559713a(15) =1434237a(16) =48361407a(17) =146868985a(18) =7834524479a(19) =27923748641
External references
- oeis: A147068