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.

A084821 Odd numbers m such that sigma(m) > m + phi(m), where sigma=A000203 is the divisor sum and phi=A000010 the totient.

Table of values

n a(n)
1 15
2 45
3 63
4 75
5 105
6 135
7 165
8 189
9 195
10 225
11 231
12 255
13 273
14 285
15 297
16 315
17 345
18 357
19 375
20 399
21 405
22 429
23 435
24 441
25 465
26 483
27 495
28 525
29 555
30 567
31 585
32 609
33 615
34 645
35 651
36 675
37 693
38 705
39 735
40 765
41 777
42 795
43 819
44 825
45 855
46 861
47 885
48 891
49 903
50 915
51 945
52 975

List of values

[15, 45, 63, 75, 105, 135, 165, 189, 195, 225, 231, 255, 273, 285, 297, 315, 345, 357, 375, 399, 405, 429, 435, 441, 465, 483, 495, 525, 555, 567, 585, 609, 615, 645, 651, 675, 693, 705, 735, 765, 777, 795, 819, 825, 855, 861, 885, 891, 903, 915, 945, 975]