Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 00100-11111-00100 pattern in any orientation.
A147004
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 00100-11111-00100 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =5a(5) =1a(6) =13a(7) =5a(8) =80a(9) =15a(10) =1622a(11) =239a(12) =39282a(13) =4131a(14) =1538621a(15) =99155a(16) =127226887a(17) =5960881a(18) =16725872953a(19) =549694386
External references
- oeis: A147004