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.

A229997 Numerator of d(k)/d(1) + d(k-1)/d(2) + ... + d(k)/d(1), where d(1),d(2),...,d(k) are the unitary divisors of n.

Table of values

n a(n)
1 1
2 5
3 10
4 17
5 26
6 25
7 50
8 65
9 82
10 13
11 122
12 85
13 170
14 125
15 52
16 257
17 290
18 205
19 362
20 221
21 500
22 305
23 530
24 325
25 626
26 425
27 730
28 425
29 842
30 130
31 962
32 1025
33 1220
34 725
35 260
36 697
37 1370
38 905
39 1700
40 169
41 1682
42 1250
43 1850
44 1037
45 2132
46 1325
47 2210
48 1285
49 2402
50 313
51 2900

List of values

[1, 5, 10, 17, 26, 25, 50, 65, 82, 13, 122, 85, 170, 125, 52, 257, 290, 205, 362, 221, 500, 305, 530, 325, 626, 425, 730, 425, 842, 130, 962, 1025, 1220, 725, 260, 697, 1370, 905, 1700, 169, 1682, 1250, 1850, 1037, 2132, 1325, 2210, 1285, 2402, 313, 2900]