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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.

A129454 a(n) = Product{i=1..n-1} Product{j=1..n-1} Product{k=1..n-1} gcd(i,j,k).

Table of values

n a(n)
0 1
1 1
2 1
3 2
4 6
5 1536
6 7680
7 8806025134080
8 61642175938560
9 2168841254587541957294161920
10 7562281854741110985626291951024209920
11 1362299589723309231779453337910253309054734620740812800000000

List of values

[1, 1, 1, 2, 6, 1536, 7680, 8806025134080, 61642175938560, 2168841254587541957294161920, 7562281854741110985626291951024209920, 1362299589723309231779453337910253309054734620740812800000000]

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

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