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.

A050211 Triangle of number of permutations of {1, 2, ..., n} having exactly k cycles, each of which is of length >=r for r=3.

Table of values

n a(n)
3 2
4 6
5 24
6 120
7 40
8 720
9 420
10 5040
11 3948
12 40320
13 38304
14 2240
15 362880
16 396576
17 50400
18 3628800
19 4419360
20 859320
21 39916800
22 53048160
23 13665960
24 246400
25 479001600
26 684478080
27 216339552
28 9609600
29 6227020800
30 9464307840
31 3501834336

List of values

[2, 6, 24, 120, 40, 720, 420, 5040, 3948, 40320, 38304, 2240, 362880, 396576, 50400, 3628800, 4419360, 859320, 39916800, 53048160, 13665960, 246400, 479001600, 684478080, 216339552, 9609600, 6227020800, 9464307840, 3501834336]