Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 110-111-101 pattern in any orientation.
A146257
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 110-111-101 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =105a(7) =241a(8) =1729a(9) =3313a(10) =39657a(11) =104401a(12) =2969697a(13) =9697625a(14) =3123603217a(15) =14435373673
External references
- oeis: A146257