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.

A361412 Number of connected 3-regular multigraphs on 2n unlabeled nodes rooted at an unoriented edge (or loop), loops allowed.

Table of values

n a(n)
0 1
1 3
2 12
3 67
4 441
5 3464
6 31616
7 331997
8 3961462
9 53105424
10 791237787
11 12978022526
12 232407307054
13 4511887729886
14 94385418177277
15 2116529900006321
16 50646269987874834
17 1288091152941695791
18 34697173459041347465
19 986800102740080746702
20 29548269236430810895013

List of values

[1, 3, 12, 67, 441, 3464, 31616, 331997, 3961462, 53105424, 791237787, 12978022526, 232407307054, 4511887729886, 94385418177277, 2116529900006321, 50646269987874834, 1288091152941695791, 34697173459041347465, 986800102740080746702, 29548269236430810895013]

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

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