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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.

A127553 a(n) = Product_{k=1..n} lcm(k,n)/gcd(k,n).

Table of values

n a(n)
1 1
2 2
3 18
4 96
5 15000
6 6480
7 84707280
8 41287680
9 21427701120
10 56700000000
11 94121726392108800
12 2483144294400
13 11159820050604594969600
14 24625709514114508800
15 620634514500000000000
16 359450793240158011392000

List of values

[1, 2, 18, 96, 15000, 6480, 84707280, 41287680, 21427701120, 56700000000, 94121726392108800, 2483144294400, 11159820050604594969600, 24625709514114508800, 620634514500000000000, 359450793240158011392000]

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

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