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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.

A308820 a(n) = Product_{k=1..n} ceiling(n/k)!.

Table of values

n a(n)
1 1
2 2
3 12
4 96
5 2880
6 34560
7 5806080
8 92897280
9 25082265600
10 2006581248000
11 794606174208000
12 19070548180992000
13 208250386136432640000
14 5831010811820113920000
15 4198327784510482022400000
16 3224315738504050193203200000
17 14799609239733590386802688000000

List of values

[1, 2, 12, 96, 2880, 34560, 5806080, 92897280, 25082265600, 2006581248000, 794606174208000, 19070548180992000, 208250386136432640000, 5831010811820113920000, 4198327784510482022400000, 3224315738504050193203200000, 14799609239733590386802688000000]

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

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