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.

A145749 Numbers n such that sigma(n)+phi(n)=sigma(n+1)+phi(n+1).

Table of values

n a(n)
1 6
2 8
3 10
4 22
5 46
6 58
7 82
8 106
9 166
10 178
11 188
12 226
13 262
14 285
15 346
16 358
17 382
18 466
19 478
20 502
21 562
22 586
23 718
24 838
25 862
26 886
27 902
28 982
29 1018
30 1186
31 1282
32 1306
33 1318
34 1366
35 1438
36 1486
37 1522
38 1618
39 1822
40 1906
41 2013
42 2026
43 2038
44 2062
45 2098
46 2206
47 2446
48 2458
49 2578

List of values

[6, 8, 10, 22, 46, 58, 82, 106, 166, 178, 188, 226, 262, 285, 346, 358, 382, 466, 478, 502, 562, 586, 718, 838, 862, 886, 902, 982, 1018, 1186, 1282, 1306, 1318, 1366, 1438, 1486, 1522, 1618, 1822, 1906, 2013, 2026, 2038, 2062, 2098, 2206, 2446, 2458, 2578]

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

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