Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 0100-0100-1111-0010-0010 pattern in any orientation.
A147345
Number of n X n binary arrays symmetric under 180 degree rotation 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) =5a(7) =21a(8) =39a(9) =165a(10) =631a(11) =2161a(12) =10045a(13) =71155a(14) =449909
External references
- oeis: A147345