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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.

A060170 Number of orbits of length n under the map whose periodic points are counted by A005809.

Table of values

n a(n)
1 3
2 6
3 27
4 120
5 600
6 3078
7 16611
8 91872
9 520749
10 3004200
11 17594247
12 104304888
13 624801957
14 3775722342
15 22991161500
16 140928011136
17 868886416866
18 5384796881850
19 33525472069563
20 209592223788000
21 1315211209630794
22 8281053081282894
23 52301607644921259
24 331260902534858976
25 2103541885645955625
26 13389670112374830378

List of values

[3, 6, 27, 120, 600, 3078, 16611, 91872, 520749, 3004200, 17594247, 104304888, 624801957, 3775722342, 22991161500, 140928011136, 868886416866, 5384796881850, 33525472069563, 209592223788000, 1315211209630794, 8281053081282894, 52301607644921259, 331260902534858976, 2103541885645955625, 13389670112374830378]

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

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