Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 2X4 el 1,1 1,2 1,3 1,4 2,4 with any orientation.
A146016
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 2X4 el 1,1 1,2 1,3 1,4 2,4 with any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =9a(5) =13a(6) =45a(7) =77a(8) =3815a(9) =10077a(10) =367067a(11) =1220229a(12) =95121107a(13) =408666247a(14) =73141896271a(15) =405640563989
External references
- oeis: A146016