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.

A246049 Number T(n,k) of endofunctions on [n] where the smallest cycle length equals k; triangle T(n,k), n>=0, 0<=k<=n, read by rows.

Table of values

n a(n)
0 1
1 0
2 1
3 0
4 3
5 1
6 0
7 19
8 6
9 2
10 0
11 175
12 51
13 24
14 6
15 0
16 2101
17 580
18 300
19 120
20 24
21 0
22 31031
23 8265
24 4360
25 2160
26 720
27 120
28 0
29 543607
30 141246
31 74130
32 41160
33 17640
34 5040
35 720
36 0
37 11012415
38 2810437
39 1456224
40 861420
41 430080
42 161280
43 40320
44 5040

List of values

[1, 0, 1, 0, 3, 1, 0, 19, 6, 2, 0, 175, 51, 24, 6, 0, 2101, 580, 300, 120, 24, 0, 31031, 8265, 4360, 2160, 720, 120, 0, 543607, 141246, 74130, 41160, 17640, 5040, 720, 0, 11012415, 2810437, 1456224, 861420, 430080, 161280, 40320, 5040]