Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 0110-0110-1111 pattern in any orientation.
A147359
Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 0110-0110-1111 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =5a(6) =23a(7) =84a(8) =333a(9) =1104a(10) =4907a(11) =30924a(12) =222811a(13) =1874271a(14) =20520483
External references
- oeis: A147359