login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A129430 Number of isomorphism classes of connected 5-regular multigraphs of order 2n, loops allowed. 9
3, 26, 639, 40264, 5846105, 1620621150, 752480161278, 538934691750368, 562620407713724992, 820458681175954269942, 1616087981640640784235446, 4183688192689449962777539596, 13914233045360143936837907106395, 58319096569220501055727735345999221 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Initial terms computed using software at http://users.cecs.anu.edu.au/~bdm/nauty/

LINKS

Table of n, a(n) for n=1..14.

FORMULA

Inverse Euler transform of A129431. - Andrew Howroyd, Mar 19 2020

CROSSREFS

Column k=5 of A333397.

Cf. A129431, A129419, A005967, A085549, A129432, A129434, A129436.

Sequence in context: A103112 A064941 A112612 * A005156 A101613 A280222

Adjacent sequences:  A129427 A129428 A129429 * A129431 A129432 A129433

KEYWORD

nonn

AUTHOR

Brendan McKay, Apr 15 2007

EXTENSIONS

a(8)-a(14) added by Andrew Howroyd, Mar 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 | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 14 15:26 EDT 2020. Contains 335729 sequences. (Running on oeis4.)