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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.

A066198 Numbers n where phi changes as fast as sigma, i.e., abs(phi(n+1) - phi(n)) = abs(sigma(n+1) - sigma(n)).

Table of values

n a(n)
1 2
2 6
3 8
4 10
5 22
6 46
7 58
8 82
9 106
10 166
11 178
12 188
13 226
14 262
15 285
16 346
17 358
18 382
19 466
20 478
21 502
22 562
23 586
24 718
25 838
26 854
27 862
28 886
29 902
30 982
31 1018
32 1186
33 1282
34 1306
35 1318
36 1366
37 1438
38 1486
39 1522
40 1618
41 1822
42 1906
43 2013
44 2026
45 2038
46 2062
47 2098
48 2206
49 2446
50 2458

List of values

[2, 6, 8, 10, 22, 46, 58, 82, 106, 166, 178, 188, 226, 262, 285, 346, 358, 382, 466, 478, 502, 562, 586, 718, 838, 854, 862, 886, 902, 982, 1018, 1186, 1282, 1306, 1318, 1366, 1438, 1486, 1522, 1618, 1822, 1906, 2013, 2026, 2038, 2062, 2098, 2206, 2446, 2458]

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

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