login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A289988 Number of unlabeled connected loopless multigraphs with n nodes of degree n or less. 3
1, 1, 2, 4, 37, 602, 34126, 6021463, 3616906549, 7361925161868, 51324462383008758, 1240420936122453106498, 105141919479926837860474091, 31581183353539008502807807352728 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,3
COMMENTS
Multigraphs are loopless.
LINKS
PROG
(nauty/bash) for n in {1..8}; do geng -c -D${n} ${n} -q | multig -m$[${n}-1] -D$[${n}-1] -u; done
CROSSREFS
Main diagonal of A334546.
Sequence in context: A212775 A115250 A018304 * A051692 A053745 A019275
KEYWORD
nonn,more
AUTHOR
Natan Arie Consigli, Aug 19 2017
EXTENSIONS
a(0) corrected and a(9)-a(13) from Andrew Howroyd, May 05 2020
STATUS
approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 2 05:08 EST 2024. Contains 370460 sequences. (Running on oeis4.)