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.

A070161 Nonprime numbers n such that q=phi(n)/(sigma(n)-n-1) is an integer and n is not a prime square.

Table of values

n a(n)
1 15
2 35
3 95
4 119
5 143
6 209
7 287
8 319
9 323
10 377
11 527
12 559
13 779
14 899
15 903
16 923
17 989
18 1007
19 1189
20 1199
21 1343
22 1349
23 1763
24 1919
25 2159
26 2507
27 2759
28 2911
29 3239
30 3599
31 3827
32 4031
33 4607
34 5183
35 5207
36 5249
37 5459
38 5543
39 6439
40 6887
41 7067
42 7279
43 7739
44 8159
45 8639
46 9179

List of values

[15, 35, 95, 119, 143, 209, 287, 319, 323, 377, 527, 559, 779, 899, 903, 923, 989, 1007, 1189, 1199, 1343, 1349, 1763, 1919, 2159, 2507, 2759, 2911, 3239, 3599, 3827, 4031, 4607, 5183, 5207, 5249, 5459, 5543, 6439, 6887, 7067, 7279, 7739, 8159, 8639, 9179]

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

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