29428287639
domain: N
Appears in sequences
- Number of isomorphism classes of connected 3-regular loopless multigraphs with n vertices and with semi-edges allowed.at n=20A243391
- Number of isomorphism classes of connected 3-regular simple graphs of order 2n with loops and semi-edges allowed.at n=20A243392
- Number of unlabeled connected loopless multigraphs with n nodes of degree 3 or less and with single or double edges.at n=21A303030