Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1100-0110-0011 pattern in any orientation.
A146446
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1100-0110-0011 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =11a(7) =17a(8) =249a(9) =505a(10) =5595a(11) =13277a(12) =255723a(13) =714985a(14) =48904687a(15) =172919585a(16) =23239333565a(17) =103253283519
External references
- oeis: A146446