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.

A307705 Expansion of Product_{k>=1} 1/(1 - x^k)^(k-phi(k)), where phi() is the Euler totient function (A000010).

Table of values

n a(n)
0 1
1 0
2 1
3 1
4 3
5 2
6 8
7 5
8 16
9 15
10 34
11 30
12 75
13 66
14 144
15 150
16 285
17 292
18 566
19 585
20 1062
21 1170
22 1988
23 2205
24 3729
25 4159
26 6755
27 7785
28 12214
29 14147
30 21957
31 25560
32 38709
33 45839
34 67884
35 80747
36 118332
37 141244
38 203614
39 245330
40 348396
41 420971
42 592439
43 717659
44 998248
45 1215439
46 1672544
47 2040210
48 2786687

List of values

[1, 0, 1, 1, 3, 2, 8, 5, 16, 15, 34, 30, 75, 66, 144, 150, 285, 292, 566, 585, 1062, 1170, 1988, 2205, 3729, 4159, 6755, 7785, 12214, 14147, 21957, 25560, 38709, 45839, 67884, 80747, 118332, 141244, 203614, 245330, 348396, 420971, 592439, 717659, 998248, 1215439, 1672544, 2040210, 2786687]