The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
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!)
A338584 Number of unlabeled nonplanar connected graphs with n edges with minimum degree 3 at each node that are not 3-connected. 4
1, 6, 28, 128, 558, 2421, 10675, 47810, 217572, 1006211 (list; graph; refs; listen; history; text; internal format)
OFFSET
13,2
LINKS
Table of n, a(n) for n=13..22.
Hugo Pfoertner, Illustration of terms a(13) and a(14).
FORMULA
a(n) = A338593(n) - A338583(n).
CROSSREFS
Cf. A006290, A007112, A123545, A338583, A338593, A338594, A338604.
Sequence in context: A117423 A351053 A171859 * A084778 A287807 A155588
Adjacent sequences: A338581 A338582 A338583 * A338585 A338586 A338587
KEYWORD
nonn,more
AUTHOR
Hugo Pfoertner, Nov 21 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 May 15 05:14 EDT 2024. Contains 372536 sequences. (Running on oeis4.)