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.

A290971 Write x/(1-x) in the form Sum_{j>=1} a(j)*x^j/(1+a(j)*x^j).

Table of values

n a(n)
1 1
2 2
3 0
4 6
5 0
6 -6
7 0
8 54
9 0
10 -30
11 0
12 -114
13 0
14 -126
15 0
16 4470
17 0
18 -294
19 0
20 -5850
21 0
22 -2046
23 0
24 -92418
25 0
26 -8190
27 0
28 -247674
29 0
30 2010
31 0
32 30229110
33 0
34 -131070
35 0
36 -8200914
37 0
38 -524286
39 0
40 -362617770
41 0
42 183162
43 0
44 -354416634
45 0
46 -8388606
47 0
48 -53614489794
49 0

List of values

[1, 2, 0, 6, 0, -6, 0, 54, 0, -30, 0, -114, 0, -126, 0, 4470, 0, -294, 0, -5850, 0, -2046, 0, -92418, 0, -8190, 0, -247674, 0, 2010, 0, 30229110, 0, -131070, 0, -8200914, 0, -524286, 0, -362617770, 0, 183162, 0, -354416634, 0, -8388606, 0, -53614489794, 0]