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.

A139172 a(n) = n!/2 - 1.

Table of values

n a(n)
2 0
3 2
4 11
5 59
6 359
7 2519
8 20159
9 181439
10 1814399
11 19958399
12 239500799
13 3113510399
14 43589145599
15 653837183999
16 10461394943999
17 177843714047999
18 3201186852863999
19 60822550204415999
20 1216451004088319999
21 25545471085854719999
22 562000363888803839999
23 12926008369442488319999

List of values

[0, 2, 11, 59, 359, 2519, 20159, 181439, 1814399, 19958399, 239500799, 3113510399, 43589145599, 653837183999, 10461394943999, 177843714047999, 3201186852863999, 60822550204415999, 1216451004088319999, 25545471085854719999, 562000363888803839999, 12926008369442488319999]

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

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