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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.

A212397 Denominator of the average number of move operations required by an insertion sort of n (distinct) elements.

Table of values

n a(n)
0 1
1 1
2 2
3 6
4 6
5 30
6 5
7 35
8 140
9 1260
10 1260
11 13860
12 13860
13 180180
14 180180
15 180180
16 360360
17 6126120
18 2042040
19 38798760
20 7759752
21 2586584
22 2586584
23 59491432
24 178474296
25 4461857400
26 4461857400
27 40156716600
28 40156716600
29 1164544781400
30 1164544781400

List of values

[1, 1, 2, 6, 6, 30, 5, 35, 140, 1260, 1260, 13860, 13860, 180180, 180180, 180180, 360360, 6126120, 2042040, 38798760, 7759752, 2586584, 2586584, 59491432, 178474296, 4461857400, 4461857400, 40156716600, 40156716600, 1164544781400, 1164544781400]

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

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