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.

A246213 Number of endofunctions on [n] where the largest cycle length equals 3.

Table of values

n a(n)
3 2
4 32
5 500
6 8600
7 165690
8 3568768
9 85372280
10 2251589600
11 65007768650
12 2041482333440
13 69330316507452
14 2533173484572640
15 99124829660524850
16 4137148176815360000
17 183498069976613613680
18 8620747043700633797888
19 427712115490907106172050
20 22350263436559575406220800

List of values

[2, 32, 500, 8600, 165690, 3568768, 85372280, 2251589600, 65007768650, 2041482333440, 69330316507452, 2533173484572640, 99124829660524850, 4137148176815360000, 183498069976613613680, 8620747043700633797888, 427712115490907106172050, 22350263436559575406220800]