Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 01000-11111-00010 pattern in any orientation.
A147012
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 01000-11111-00010 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) =33a(10) =561a(11) =1063a(12) =16239a(13) =37023a(14) =683049a(15) =1813981a(16) =73918361a(17) =233718771a(18) =15472778911a(19) =58161293145
External references
- oeis: A147012