Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 3X2 zee 1,1 1,2 1,3 2,3 2,4 in any orientation.
A146128
Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 3X2 zee 1,1 1,2 1,3 2,3 2,4 in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =9a(5) =13a(6) =45a(7) =103a(8) =3361a(9) =8833a(10) =372663a(11) =1287127a(12) =106100985a(13) =471171193a(14) =109709730093a(15) =638573372655
External references
- oeis: A146128