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.

A102232 Number of preferential arrangements of n labeled elements when at least k=three ranks are required.

Table of values

n a(n)
0 0
1 0
2 0
3 6
4 60
5 510
6 4620
7 47166
8 545580
9 7086750
10 102246540
11 1622630526
12 28091563500
13 526858340190
14 10641342954060
15 230283190945086
16 5315654681915820
17 130370767029004830
18 3385534663256583180
19 92801587319327886846
20 2677687796244383154540
21 81124824998504071784670

List of values

[0, 0, 0, 6, 60, 510, 4620, 47166, 545580, 7086750, 102246540, 1622630526, 28091563500, 526858340190, 10641342954060, 230283190945086, 5315654681915820, 130370767029004830, 3385534663256583180, 92801587319327886846, 2677687796244383154540, 81124824998504071784670]

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

Content is available under The OEIS End-User License Agreement.