Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1010-1111-0101 pattern in any orientation.
A147429
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1010-1111-0101 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =9a(7) =11a(8) =141a(9) =257a(10) =1611a(11) =3315a(12) =36853a(13) =86889a(14) =1683453a(15) =4577119a(16) =233675247a(17) =765781809a(18) =58076270521a(19) =224796831393
External references
- oeis: A147429