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.

A181982 Expansion of (1 - x^2)^2 * (1 + x)^2 / (1 - x^6) in powers of x.

Table of values

n a(n)
0 1
1 2
2 -1
3 -4
4 -1
5 2
6 2
7 2
8 -1
9 -4
10 -1
11 2
12 2
13 2
14 -1
15 -4
16 -1
17 2
18 2
19 2
20 -1
21 -4
22 -1
23 2
24 2
25 2
26 -1
27 -4
28 -1
29 2
30 2
31 2
32 -1
33 -4
34 -1
35 2
36 2
37 2
38 -1
39 -4
40 -1
41 2
42 2
43 2
44 -1
45 -4
46 -1
47 2
48 2
49 2
50 -1
51 -4
52 -1
53 2
54 2
55 2
56 -1
57 -4
58 -1
59 2
60 2
61 2
62 -1
63 -4
64 -1
65 2
66 2
67 2
68 -1
69 -4
70 -1
71 2
72 2
73 2

List of values

[1, 2, -1, -4, -1, 2, 2, 2, -1, -4, -1, 2, 2, 2, -1, -4, -1, 2, 2, 2, -1, -4, -1, 2, 2, 2, -1, -4, -1, 2, 2, 2, -1, -4, -1, 2, 2, 2, -1, -4, -1, 2, 2, 2, -1, -4, -1, 2, 2, 2, -1, -4, -1, 2, 2, 2, -1, -4, -1, 2, 2, 2, -1, -4, -1, 2, 2, 2, -1, -4, -1, 2, 2, 2]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.