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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.

A366821 a(n) is phi(n^n-1) where phi is the Euler totient function.

Table of values

n a(n)
2 2
3 12
4 128
5 1400
6 30240
7 264992
8 6635520
9 141087744
10 5890320000
11 114117380608
12 4662793175040
13 99053063903040
14 5470524984113280
15 167080949856000000
16 9208981628670443520
17 413582117375670921216
18 29531731481729468006400
19 659473218553437863041320

List of values

[2, 12, 128, 1400, 30240, 264992, 6635520, 141087744, 5890320000, 114117380608, 4662793175040, 99053063903040, 5470524984113280, 167080949856000000, 9208981628670443520, 413582117375670921216, 29531731481729468006400, 659473218553437863041320]

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

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