Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 0100-0100-1111-0010-0010 pattern in any orientation.
A147339
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 0100-0100-1111-0010-0010 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =1a(8) =11a(9) =15a(10) =183a(11) =305a(12) =1851a(13) =3761a(14) =35145a(15) =75363a(16) =1670651a(17) =4265463a(18) =180681913a(19) =541465905a(20) =30900571055a(21) =107421245147
External references
- oeis: A147339