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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.

A066679 Numbers n such that sigma(n) is congruent to n mod phi(n).

Table of values

n a(n)
1 1
2 2
3 6
4 10
5 12
6 44
7 90
8 184
9 440
10 528
11 588
12 672
13 752
14 3796
15 8928
16 9888
17 12224
18 35640
19 37680
20 49024
21 50976
22 89152
23 94200
24 108192
25 146412
26 159840
27 279864
28 1734720
29 2554368
30 2977920
31 12580864
32 14239872
33 16544880
34 28321920
35 41362200
36 56976480
37 60610624

List of values

[1, 2, 6, 10, 12, 44, 90, 184, 440, 528, 588, 672, 752, 3796, 8928, 9888, 12224, 35640, 37680, 49024, 50976, 89152, 94200, 108192, 146412, 159840, 279864, 1734720, 2554368, 2977920, 12580864, 14239872, 16544880, 28321920, 41362200, 56976480, 60610624]

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

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