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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.

A332906 Number of entries in the second cycles of all permutations of [n] when cycles are ordered by increasing lengths.

Table of values

n a(n)
2 1
3 7
4 37
5 241
6 1661
7 13301
8 117209
9 1150297
10 12314329
11 144593989
12 1828734689
13 24995387561
14 365311053953
15 5707795873261
16 94637770625761
17 1665132643843201
18 30896642665904609
19 604541044692565157
20 12416248460455779089
21 267500866283111679289
22 6024053249628809274769

List of values

[1, 7, 37, 241, 1661, 13301, 117209, 1150297, 12314329, 144593989, 1828734689, 24995387561, 365311053953, 5707795873261, 94637770625761, 1665132643843201, 30896642665904609, 604541044692565157, 12416248460455779089, 267500866283111679289, 6024053249628809274769]

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

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