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.

A258587 Expansion of f(-x, -x) * f(x^2, x^10) in powers of x where f(, ) is Ramanujan's general theta function.

Table of values

n a(n)
0 1
1 -2
2 1
3 -2
4 2
5 0
6 2
7 0
8 0
9 -2
10 1
11 -4
12 0
13 0
14 2
15 0
16 3
17 -2
18 2
19 -2
20 2
21 0
22 0
23 0
24 0
25 -4
26 2
27 -2
28 0
29 0
30 0
31 0
32 3
33 -2
34 0
35 -2
36 4
37 0
38 2
39 0
40 0
41 -4
42 1
43 -2
44 0
45 0
46 4
47 0
48 2
49 -2
50 0
51 -4
52 2
53 0
54 0
55 0
56 0
57 -2
58 2
59 -2
60 0
61 0
62 0
63 0
64 2
65 -2
66 3
67 -4
68 2
69 0
70 2
71 0
72 0
73 0
74 2
75 -2
76 0
77 0
78 2
79 0
80 3

List of values

[1, -2, 1, -2, 2, 0, 2, 0, 0, -2, 1, -4, 0, 0, 2, 0, 3, -2, 2, -2, 2, 0, 0, 0, 0, -4, 2, -2, 0, 0, 0, 0, 3, -2, 0, -2, 4, 0, 2, 0, 0, -4, 1, -2, 0, 0, 4, 0, 2, -2, 0, -4, 2, 0, 0, 0, 0, -2, 2, -2, 0, 0, 0, 0, 2, -2, 3, -4, 2, 0, 2, 0, 0, 0, 2, -2, 0, 0, 2, 0, 3]

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

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