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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.

A134818 Number of unlabeled connected loopless multigraphs with n nodes of degree 4 or less and with at most triple edges.

Table of values

n a(n)
1 1
2 3
3 9
4 37
5 146
6 772
7 4449
8 30307
9 228605
10 1921464
11 17652327
12 176162548
13 1893738334
14 21806975279
15 267636988052
16 3486370839295
17 48029272657002
18 697542580286159
19 10649954607360119
20 170508064788069346
21 2856122791685125616
22 49951625299057923405

List of values

[1, 3, 9, 37, 146, 772, 4449, 30307, 228605, 1921464, 17652327, 176162548, 1893738334, 21806975279, 267636988052, 3486370839295, 48029272657002, 697542580286159, 10649954607360119, 170508064788069346, 2856122791685125616, 49951625299057923405]

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

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