a(n) is the number of c-nets with n+1 vertices and 2n+2 edges, n >= 1.
A001508
a(n) is the number of c-nets with n+1 vertices and 2n+2 edges, n >= 1.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =13a(5) =252a(6) =3740a(7) =51300a(8) =685419a(9) =9095856a(10) =120872850a(11) =1614234960a(12) =21697730835a(13) =293695935764
External references
- oeis: A001508