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.

A248886 Expansion of f(-x, -x) * f(x^2, x^4) 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 3
5 -2
6 2
7 0
8 2
9 -2
10 1
11 -4
12 0
13 -2
14 3
15 -2
16 2
17 0
18 4
19 -2
20 2
21 0
22 0
23 -2
24 1
25 -4
26 2
27 -2
28 2
29 -2
30 3
31 -2
32 0
33 -2
34 2
35 -2
36 2
37 0
38 2
39 -4
40 4
41 0
42 0
43 0
44 1
45 -2
46 4
47 0
48 2
49 -4
50 2
51 -2
52 1
53 -6
54 0
55 -2
56 2
57 0
58 0
59 -2
60 4
61 -2
62 0
63 -2
64 2
65 0
66 4
67 0
68 4
69 -2
70 1
71 -2
72 0
73 -2
74 4
75 0
76 0
77 -2

List of values

[1, -2, 1, -2, 3, -2, 2, 0, 2, -2, 1, -4, 0, -2, 3, -2, 2, 0, 4, -2, 2, 0, 0, -2, 1, -4, 2, -2, 2, -2, 3, -2, 0, -2, 2, -2, 2, 0, 2, -4, 4, 0, 0, 0, 1, -2, 4, 0, 2, -4, 2, -2, 1, -6, 0, -2, 2, 0, 0, -2, 4, -2, 0, -2, 2, 0, 4, 0, 4, -2, 1, -2, 0, -2, 4, 0, 0, -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.