Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1000-1010-1111 pattern in any orientation.
A146808
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1000-1010-1111 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =19a(7) =27a(8) =613a(9) =1233a(10) =14815a(11) =37647a(12) =702665a(13) =2068725a(14) =127508375a(15) =463231511a(16) =59947853247a(17) =271601475595
External references
- oeis: A146808