cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

Showing 1-2 of 2 results.

A360863 Number of unlabeled connected multigraphs with n edges and degree >= 3 at each node, loops allowed.

Original entry on oeis.org

0, 1, 3, 5, 13, 36, 99, 301, 980, 3345, 12036, 45399, 178420, 729149
Offset: 1

Views

Author

Andrew Howroyd, Feb 24 2023

Keywords

Crossrefs

Row sums of A360862.
Cf. A360864 (by circuit rank), A360865 (not necessarily connected).

Formula

Inverse Euler transform of A360865.

A360869 Number of unlabeled loopless multigraphs with n edges and degree >= 3 at each node.

Original entry on oeis.org

0, 0, 1, 1, 2, 7, 13, 35, 101, 295, 928, 3168, 11247, 42263
Offset: 1

Views

Author

Andrew Howroyd, Feb 25 2023

Keywords

Crossrefs

Cf. A050535, A360865 (loops allowed), A360867 (connected).

Formula

Euler transform of A360867.
Showing 1-2 of 2 results.

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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