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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.

A116020 Numbers n such that sigma(n) - phi(n) is a repdigit greater than 2.

Table of values

n a(n)
1 4
2 8
3 9
4 18
5 25
6 27
7 28
8 57
9 62
10 85
11 123
12 192
13 218
14 258
15 259
16 261
17 322
18 403
19 632
20 662
21 693
22 1127
23 2195
24 2218
25 2321
26 2658
27 3548
28 4577
29 4763
30 5597
31 5603
32 5921
33 6662
34 7421
35 7697
36 9617
37 9683
38 10721
39 10877
40 11537
41 12317
42 13323
43 17243
44 18659
45 23363
46 26483

List of values

[4, 8, 9, 18, 25, 27, 28, 57, 62, 85, 123, 192, 218, 258, 259, 261, 322, 403, 632, 662, 693, 1127, 2195, 2218, 2321, 2658, 3548, 4577, 4763, 5597, 5603, 5921, 6662, 7421, 7697, 9617, 9683, 10721, 10877, 11537, 12317, 13323, 17243, 18659, 23363, 26483]

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

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