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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.

A058830 Number of labeled n-node 4-valent graphs containing a single double edge.

Table of values

n a(n)
0 0
1 0
2 0
3 0
4 0
5 0
6 90
7 3150
8 131040
9 6667920
10 416593800
11 31506454980
12 2841125225400
13 301392906637680
14 37173926260360890
15 5276692469017119150
16 854273993613848327520
17 156491796247034356836000

List of values

[0, 0, 0, 0, 0, 0, 90, 3150, 131040, 6667920, 416593800, 31506454980, 2841125225400, 301392906637680, 37173926260360890, 5276692469017119150, 854273993613848327520, 156491796247034356836000]

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

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