Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1000-1100-0111-0100 pattern in any orientation.
A147161
Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1000-1100-0111-0100 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =5a(6) =25a(7) =109a(8) =547a(9) =2673a(10) =15771a(11) =134989a(12) =1264235
External references
- oeis: A147161