Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1100-1111-0100 pattern in any orientation.
A146713
Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1100-1111-0100 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =21a(6) =47a(7) =295a(8) =1465a(9) =7767a(10) =65051a(11) =795933a(12) =8973805a(13) =164427495a(14) =3016356659a(15) =81769439115
External references
- oeis: A146713