Number of labeled graphs on n nodes with degree set {2,4}.
A228697
Number of labeled graphs on n nodes with degree set {2,4}.
Terms
- a(0) =1a(1) =0a(2) =0a(3) =1a(4) =3a(5) =38a(6) =730a(7) =20670a(8) =781578a(9) =37885204a(10) =2289786624a(11) =168879532980
External references
- oeis: A228697