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.

A138286 a(n) = A058162(n) / A000688(n).

Table of values

n a(n)
1 1
2 1
3 1
4 2
5 6
6 60
7 120
8 640
9 3780
10 90720
11 362880
12 6652800
13 39916800
14 1037836800
15 10897286400
16 53137244160
17 1307674368000
18 33345696384000
19 355687428096000
20 10137091700736000
21 202741834014720000
22 5109094217170944000
23 51090942171709440000
24 1641397888183173120000
25 16157510461803110400000

List of values

[1, 1, 1, 2, 6, 60, 120, 640, 3780, 90720, 362880, 6652800, 39916800, 1037836800, 10897286400, 53137244160, 1307674368000, 33345696384000, 355687428096000, 10137091700736000, 202741834014720000, 5109094217170944000, 51090942171709440000, 1641397888183173120000, 16157510461803110400000]

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

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