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.

A280210 Expansion of (Sum_{k>=1} mu(k)^2*x^k)^3, where mu(k) is the Moebius function (A008683).

Table of values

n a(n)
0 0
1 0
2 0
3 1
4 3
5 6
6 7
7 9
8 12
9 19
10 21
11 21
12 21
13 30
14 36
15 37
16 36
17 48
18 58
19 63
20 57
21 70
22 78
23 87
24 78
25 96
26 105
27 114
28 105
29 123
30 133
31 138
32 126
33 148
34 162
35 174
36 156
37 195
38 207
39 220
40 192
41 234
42 250
43 261
44 237
45 280
46 312
47 318
48 282
49 330
50 363
51 370
52 315
53 375
54 405
55 432
56 366
57 421
58 453
59 483
60 417
61 468
62 507
63 532
64 474
65 537
66 568
67 591
68 519
69 601
70 630
71 666
72 570

List of values

[0, 0, 0, 1, 3, 6, 7, 9, 12, 19, 21, 21, 21, 30, 36, 37, 36, 48, 58, 63, 57, 70, 78, 87, 78, 96, 105, 114, 105, 123, 133, 138, 126, 148, 162, 174, 156, 195, 207, 220, 192, 234, 250, 261, 237, 280, 312, 318, 282, 330, 363, 370, 315, 375, 405, 432, 366, 421, 453, 483, 417, 468, 507, 532, 474, 537, 568, 591, 519, 601, 630, 666, 570]