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.

A309731 Expansion of Sum_{k>=1} k * x^k/(1 - x^k)^3.

Table of values

n a(n)
1 1
2 5
3 9
4 20
5 20
6 48
7 35
8 76
9 72
10 110
11 77
12 204
13 104
14 196
15 210
16 288
17 170
18 405
19 209
20 480
21 378
22 440
23 299
24 816
25 425
26 598
27 594
28 868
29 464
30 1200
31 527
32 1104
33 858
34 986
35 910
36 1800
37 740
38 1216
39 1170
40 1960
41 902
42 2184
43 989
44 1980
45 1890
46 1748
47 1175
48 3216
49 1470
50 2475
51 1938
52 2704
53 1484
54 3456
55 2090

List of values

[1, 5, 9, 20, 20, 48, 35, 76, 72, 110, 77, 204, 104, 196, 210, 288, 170, 405, 209, 480, 378, 440, 299, 816, 425, 598, 594, 868, 464, 1200, 527, 1104, 858, 986, 910, 1800, 740, 1216, 1170, 1960, 902, 2184, 989, 1980, 1890, 1748, 1175, 3216, 1470, 2475, 1938, 2704, 1484, 3456, 2090]