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.

A128242 Number of n-node (unlabeled) connected graphs with girth 5.

Original entry on oeis.org

0, 0, 1, 1, 5, 16, 66, 266, 1235, 6350, 37364, 251106, 1942085, 17287710, 177086792, 2084120446, 28125888087, 434318629496, 7657513894860
Offset: 3

Views

Author

Keith Briggs, May 05 2007

Keywords

Crossrefs

Cf. A128041, A128042.
Cf. A128236, A128237, A128238, A128239, A128240, A128241, A128243.

Programs

  • nauty
    geng -ctfq $n | countg -qg5 --ng # Martin Fuller, May 03 2015

Extensions

Corrected and extended by Martin Fuller, May 01 2015
a(18)-a(21) added by Georg Grasegger, May 02 2023

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

Content is available under The OEIS End-User License Agreement.