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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.

A308944 a(n) = Product_{k=1..n} lcm(n,k) / (k * gcd(n,k)).

Table of values

n a(n)
1 1
2 1
3 3
4 4
5 125
6 9
7 16807
8 1024
9 59049
10 15625
11 2357947691
12 5184
13 1792160394037
14 282475249
15 474609375
16 17179869184
17 2862423051509815793
18 3486784401
19 5480386857784802185939
20 250000000000
21 10382917022245341
22 5559917313492231481
23 39471584120695485887249589623

List of values

[1, 1, 3, 4, 125, 9, 16807, 1024, 59049, 15625, 2357947691, 5184, 1792160394037, 282475249, 474609375, 17179869184, 2862423051509815793, 3486784401, 5480386857784802185939, 250000000000, 10382917022245341, 5559917313492231481, 39471584120695485887249589623]

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

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