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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.

A085713 Consider numbers k such that phi(x) = k has exactly 3 solutions and they are (3*p, 4*p, 6*p) where p is 1 or a prime. Sequence gives values of p.

Table of values

n a(n)
1 1
2 23
3 29
4 47
5 53
6 59
7 71
8 83
9 103
10 107
11 131
12 149
13 167
14 173
15 179
16 191
17 197
18 223
19 227
20 239
21 263
22 269
23 283
24 293
25 311
26 317
27 347
28 359
29 373
30 383
31 389
32 419
33 431
34 443
35 467
36 479
37 491
38 503
39 509
40 557
41 563
42 569
43 587
44 599
45 643
46 647
47 653
48 659
49 677
50 683
51 709
52 719

List of values

[1, 23, 29, 47, 53, 59, 71, 83, 103, 107, 131, 149, 167, 173, 179, 191, 197, 223, 227, 239, 263, 269, 283, 293, 311, 317, 347, 359, 373, 383, 389, 419, 431, 443, 467, 479, 491, 503, 509, 557, 563, 569, 587, 599, 643, 647, 653, 659, 677, 683, 709, 719]

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

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