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.

A115660 Expansion of (phi(q) * phi(q^6) - phi(q^2) * phi(q^3)) / 2 in powers of q where phi() is a Ramanujan theta function.

Table of values

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

List of values

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

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

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