cp's OEIS Frontend

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.

A246951 Number of endofunctions f on [n] such that the number of cycles of f is a multiple of 3 for each size that is a multiple of 3.

Table of values

n a(n)
0 1
1 1
2 4
3 25
4 224
5 2625
6 37936
7 651553
8 12963840
9 293219361
10 7429984000
11 208486630121
12 6417388432896
13 214990745268065
14 7787303908091904
15 303250854519320625
16 12633932936000045056
17 560712315504995304897
18 26410168773292930375680
19 1315770870814835066545081

List of values

[1, 1, 4, 25, 224, 2625, 37936, 651553, 12963840, 293219361, 7429984000, 208486630121, 6417388432896, 214990745268065, 7787303908091904, 303250854519320625, 12633932936000045056, 560712315504995304897, 26410168773292930375680, 1315770870814835066545081]

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

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