A360865 Number of unlabeled multigraphs with n edges and degree >= 3 at each node, loops allowed.

0, 1, 3, 6, 16, 48, 130, 403, 1293, 4346, 15318, 56604, 217802, 873022

Offset

1,3

Links

Table of n, a(n) for n=1..14.

Formula

Euler transform of A360863.

Crossrefs

Cf. A360863 (connected).

Sequence in context: A305136 A369073 A300355 * A378801 A274294 A201969

Adjacent sequences: A360862 A360863 A360864 * A360866 A360867 A360868

Keyword

nonn,more

Author

Andrew Howroyd, Feb 24 2023

Status

approved