Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 10000-11111-10000 pattern in any orientation.
A147077
Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 10000-11111-10000 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =1a(8) =1a(9) =1a(10) =30a(11) =13a(12) =346a(13) =65a(14) =3487a(15) =313a(16) =36391a(17) =2325a(18) =506879a(19) =24995a(20) =9068596a(21) =319309a(22) =281171492a(23) =7251986
External references
- oeis: A147077