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.

A065301 Numbers k such that both k and the sum of its divisors are squarefree numbers.

Table of values

n a(n)
1 1
2 2
3 5
4 13
5 26
6 29
7 37
8 41
9 61
10 73
11 74
12 101
13 109
14 113
15 122
16 137
17 146
18 157
19 173
20 181
21 193
22 218
23 229
24 257
25 277
26 281
27 313
28 314
29 317
30 353
31 362
32 373
33 386
34 389
35 397
36 401
37 409
38 421
39 433
40 457
41 458
42 461
43 509
44 541
45 554
46 569
47 601
48 613
49 617
50 626
51 641
52 653
53 661
54 673
55 677

List of values

[1, 2, 5, 13, 26, 29, 37, 41, 61, 73, 74, 101, 109, 113, 122, 137, 146, 157, 173, 181, 193, 218, 229, 257, 277, 281, 313, 314, 317, 353, 362, 373, 386, 389, 397, 401, 409, 421, 433, 457, 458, 461, 509, 541, 554, 569, 601, 613, 617, 626, 641, 653, 661, 673, 677]