Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1100-1111-0010 pattern in any orientation.
A146699
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1100-1111-0010 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =17a(7) =21a(8) =585a(9) =1175a(10) =13235a(11) =33591a(12) =904833a(13) =2777683a(14) =243371641a(15) =949834779a(16) =144264575111a(17) =703897326167
External references
- oeis: A146699