A334547 Number of unlabeled connected loopless multigraphs with n nodes of degree 5 or less.

1, 1, 5, 14, 93, 602, 5847, 66289, 937696, 15575285, 301360805, 6663874305, 166516898890, 4654082023569, 144301649717895, 4928171085359360, 184252862642720722, 7501009857590958129, 330928677041195111955, 15754816518916261088582, 806306082299053607173143

Offset

0,3

Links

Table of n, a(n) for n=0..20.

Formula

Inverse Euler transform of A333896.

Crossrefs

Column k=5 of A334546.

Cf. A303031, A303032, A303033, A333896.

Sequence in context: A224245 A238380 A183307 * A348777 A024167 A316421

Adjacent sequences: A334544 A334545 A334546 * A334548 A334549 A334550

Keyword

nonn

Author

Andrew Howroyd, May 05 2020

Status

approved