Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1100-0111-0001-0001 pattern in any orientation.
A147284
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1100-0111-0001-0001 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =1a(8) =221a(9) =439a(10) =5873a(11) =13627a(12) =205453
External references
- oeis: A147284