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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.

A226959 a(0)=1 and a(n)=prime(n)*lcm(prime(n)-1, a(n-1)) for n > 0.

Table of values

n a(n)
0 1
1 2
2 6
3 60
4 420
5 4620
6 60060
7 4084080
8 232792560
9 5354228880
10 155272637520
11 4813451763120
12 178097715235440
13 7302006324653040
14 313986271960080720
15 14757354782123793840
16 782139803452561073520
17 46146248403701103337680
18 2814921152625767303598480

List of values

[1, 2, 6, 60, 420, 4620, 60060, 4084080, 232792560, 5354228880, 155272637520, 4813451763120, 178097715235440, 7302006324653040, 313986271960080720, 14757354782123793840, 782139803452561073520, 46146248403701103337680, 2814921152625767303598480]

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

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