Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1000-1000-1100-0111 pattern in any orientation.
A147100
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1000-1000-1100-0111 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =1a(8) =67a(9) =117a(10) =1095a(11) =2187a(12) =29205a(13) =68767a(14) =1031073a(15) =2764619a(16) =85636311a(17) =266613411a(18) =21897961453a(19) =82048784245
External references
- oeis: A147100