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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.

A243394 Number of isomorphism classes of connected 3-regular multigraphs with n vertices and with loops and semi-edges allowed.

Table of values

n a(n)
1 2
2 5
3 7
4 22
5 43
6 141
7 373
8 1270
9 4053
10 14671
11 52826
12 203289
13 795581
14 3241367
15 13504130
16 57904671
17 253856990
18 1139231977
19 5219113084
20 24401837085
21 116278408069
22 564380686932
23 2787884851040
24 14007277302822
25 71538337097031
26 371197207327709
27 1955833646495247
28 10459788214042492

List of values

[2, 5, 7, 22, 43, 141, 373, 1270, 4053, 14671, 52826, 203289, 795581, 3241367, 13504130, 57904671, 253856990, 1139231977, 5219113084, 24401837085, 116278408069, 564380686932, 2787884851040, 14007277302822, 71538337097031, 371197207327709, 1955833646495247, 10459788214042492]

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

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