8020967
domain: N
Appears in sequences
- Irregular triangle E(n,g) counting not necessarily connected 4-regular simple graphs on n vertices with girth exactly g.at n=19A185140
- Irregular triangle E(n,g) counting not necessarily connected 4-regular simple graphs on n vertices with girth exactly g.at n=37A185140
- Number of not necessarily connected 4-regular simple graphs on n vertices with girth exactly 3.at n=16A185143