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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.

A228695 Number of labeled graphs on 2n nodes with degree set {1,2,3}, with multiple edges and loops allowed.

Table of values

n a(n)
0 1
1 1
2 7
3 47
4 521
5 7233
6 129443
7 2811701
8 73203561
9 2229207953
10 78389689559
11 3138945552419
12 141714151130833
13 7146006410498833
14 399443567886826899
15 24581290495461129817
16 1655664011866577666737
17 121413069330848040859809
18 9648772995329567310573319

List of values

[1, 1, 7, 47, 521, 7233, 129443, 2811701, 73203561, 2229207953, 78389689559, 3138945552419, 141714151130833, 7146006410498833, 399443567886826899, 24581290495461129817, 1655664011866577666737, 121413069330848040859809, 9648772995329567310573319]

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

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