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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.

A084167 Numbers k in A002313 such that the count of primitive roots of k (A084168) are also in sequence A002313, where A002313 is the list of primes p having a unique representation as the sum of two squares, p = x^2 + y^2.

Table of values

n a(n)
1 1
2 5
3 17
4 109
5 157
6 317
7 389
8 449
9 709
10 1201
11 1237
12 1249
13 1429
14 1621
15 1801
16 2341
17 3001

List of values

[1, 5, 17, 109, 157, 317, 389, 449, 709, 1201, 1237, 1249, 1429, 1621, 1801, 2341, 3001]

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

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