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.

A379122 Odd numbers m for which A379113(m^2) > 1, i.e., k = m^2 has a proper unitary divisor d > 1 such that A048720(A065621(sigma(d)),sigma(k/d)) is equal to sigma(k).

Table of values

n a(n)
1 15
2 55
3 57
4 111
5 171
6 195
7 303
8 465
9 497
10 595
11 639
12 867
13 879
14 925
15 959
16 1169
17 1263
18 1953
19 3135
20 3345
21 3489
22 3565
23 5425
24 6923
25 7239
26 8153
27 8215
28 8801
29 8959
30 9703
31 10033
32 10507
33 11249
34 14291
35 16275
36 18135
37 18569
38 18693
39 19173
40 20271
41 23943
42 24303
43 26607
44 28325
45 32581
46 33655
47 34163
48 40393
49 43927
50 46221
51 47649
52 55281

List of values

[15, 55, 57, 111, 171, 195, 303, 465, 497, 595, 639, 867, 879, 925, 959, 1169, 1263, 1953, 3135, 3345, 3489, 3565, 5425, 6923, 7239, 8153, 8215, 8801, 8959, 9703, 10033, 10507, 11249, 14291, 16275, 18135, 18569, 18693, 19173, 20271, 23943, 24303, 26607, 28325, 32581, 33655, 34163, 40393, 43927, 46221, 47649, 55281]