login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A287892 Unrooted unlabeled 4-cactus graphs on 3n+1 nodes. 0
0, 1, 1, 3, 7, 25, 88, 366, 1583, 7336, 34982, 172384 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Table of n, a(n) for n=0..11.

Maryam Bahrani and Jérémie Lumbroso, Enumerations, Forbidden Subgraph Characterizations, and the Split-Decomposition, arXiv:1608.01465 [math.CO], 2016.

CROSSREFS

Sequence in context: A148738 A148739 A129084 * A002870 A096579 A120540

Adjacent sequences:  A287889 A287890 A287891 * A287893 A287894 A287895

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Jun 21 2017

STATUS

approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 26 00:37 EDT 2019. Contains 321479 sequences. (Running on oeis4.)