cp's OEIS Frontend

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.

A097646 Numbers n such that n = phi(phi(n) + sigma(n)).

Table of values

n a(n)
1 1
2 2
3 6
4 10
5 20
6 22
7 46
8 48
9 58
10 82
11 106
12 166
13 178
14 180
15 208
16 226
17 262
18 346
19 358
20 382
21 466
22 478
23 502
24 562
25 586
26 718
27 838
28 862
29 864
30 886
31 982
32 1018
33 1120
34 1186
35 1282
36 1306
37 1318
38 1366
39 1368
40 1438
41 1486
42 1522
43 1618
44 1822
45 1906
46 2026
47 2038
48 2062
49 2098
50 2206

List of values

[1, 2, 6, 10, 20, 22, 46, 48, 58, 82, 106, 166, 178, 180, 208, 226, 262, 346, 358, 382, 466, 478, 502, 562, 586, 718, 838, 862, 864, 886, 982, 1018, 1120, 1186, 1282, 1306, 1318, 1366, 1368, 1438, 1486, 1522, 1618, 1822, 1906, 2026, 2038, 2062, 2098, 2206]

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

Content is available under The OEIS End-User License Agreement.