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.

A065149 Composite numbers m such that phi(m)*sigma(m) is divisible by m-1.

Table of values

n a(n)
1 10
2 33
3 65
4 136
5 145
6 261
7 385
8 451
9 897
10 946
11 1281
12 1441
13 1665
14 1729
15 2241
16 2353
17 3585
18 5185
19 6721
20 7201
21 8380
22 8911
23 8961
24 11521
25 11782
26 12673
27 12801
28 17101
29 18241
30 20737
31 25201
32 26625
33 26677
34 26937
35 29697
36 29953
37 30721
38 30889
39 32896

List of values

[10, 33, 65, 136, 145, 261, 385, 451, 897, 946, 1281, 1441, 1665, 1729, 2241, 2353, 3585, 5185, 6721, 7201, 8380, 8911, 8961, 11521, 11782, 12673, 12801, 17101, 18241, 20737, 25201, 26625, 26677, 26937, 29697, 29953, 30721, 30889, 32896]

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

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