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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.

A138388 Numbers of unlabeled graphs with n vertices and 3 unicyclic components.

Table of values

n a(n)
9 1
10 2
11 8
12 27
13 89
14 289
15 938
16 2985
17 9456
18 29722
19 92842
20 288509
21 892506
22 2749940
23 8443504
24 25845735
25 78897469
26 240259510
27 730040882
28 2213910727
29 6701939407
30 20255424836
31 61128717826
32 184233427305
33 554574518396
34 1667491889239

List of values

[1, 2, 8, 27, 89, 289, 938, 2985, 9456, 29722, 92842, 288509, 892506, 2749940, 8443504, 25845735, 78897469, 240259510, 730040882, 2213910727, 6701939407, 20255424836, 61128717826, 184233427305, 554574518396, 1667491889239]

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

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