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.

A218385 (n-2)!/n when an integer.

Table of values

n a(n)
1 4
2 90
3 560
4 4032
5 302400
6 34214400
7 415134720
8 5448643200
9 1162377216000
10 320118685286400
11 5792623828992000
12 110586454917120000
13 46833363657400320000
14 1034080669555399065600
15 23863400066663055360000
16 574489260864110592000000
17 14403266468807344128000000
18 10162944820390462016716800000

List of values

[4, 90, 560, 4032, 302400, 34214400, 415134720, 5448643200, 1162377216000, 320118685286400, 5792623828992000, 110586454917120000, 46833363657400320000, 1034080669555399065600, 23863400066663055360000, 574489260864110592000000, 14403266468807344128000000, 10162944820390462016716800000]

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

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