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.

A246523 Number of endofunctions on [n] whose cycle lengths are divisors of 3.

Table of values

n a(n)
0 1
1 1
2 3
3 18
4 157
5 1776
6 24687
7 407464
8 7792857
9 169554240
10 4137133051
11 111912543744
12 3324740466357
13 107628168419968
14 3771341043102375
15 142230049514309376
16 5744687204783023153
17 247424591909961916416
18 11320453594446364577907
19 548348501001426735001600

List of values

[1, 1, 3, 18, 157, 1776, 24687, 407464, 7792857, 169554240, 4137133051, 111912543744, 3324740466357, 107628168419968, 3771341043102375, 142230049514309376, 5744687204783023153, 247424591909961916416, 11320453594446364577907, 548348501001426735001600]

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

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