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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.

A137916 Number of n-node labeled graphs whose components are unicyclic graphs.

Table of values

n a(n)
0 1
1 0
2 0
3 1
4 15
5 222
6 3670
7 68820
8 1456875
9 34506640
10 906073524
11 26154657270
12 823808845585
13 28129686128940
14 1035350305641990
15 40871383866109888
16 1722832666898627865
17 77242791668604946560
18 3670690919234354407000
19 184312149879830557190940
20 9751080154504005703189791

List of values

[1, 0, 0, 1, 15, 222, 3670, 68820, 1456875, 34506640, 906073524, 26154657270, 823808845585, 28129686128940, 1035350305641990, 40871383866109888, 1722832666898627865, 77242791668604946560, 3670690919234354407000, 184312149879830557190940, 9751080154504005703189791]

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

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