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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.

A361447 Number of connected 3-regular (cubic) multigraphs on 2n unlabeled nodes rooted at an unoriented edge (or loop) whose removal does not disconnect the graph, loops allowed.

Table of values

n a(n)
0 1
1 2
2 9
3 49
4 338
5 2744
6 26025
7 282419
8 3463502
9 47439030
10 718618117
11 11937743088
12 215896959624
13 4224096594516
14 88919920910684
15 2004237153640098
16 48165411560792500
17 1229462431057436457
18 33221743136066636436
19 947415638925100675208
20 28436953641282225835143

List of values

[1, 2, 9, 49, 338, 2744, 26025, 282419, 3463502, 47439030, 718618117, 11937743088, 215896959624, 4224096594516, 88919920910684, 2004237153640098, 48165411560792500, 1229462431057436457, 33221743136066636436, 947415638925100675208, 28436953641282225835143]

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

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