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.

A257653 Expansion of f(-x^2)^3 * phi(x^3) / f(-x^6) in powers of x where phi(), f() are Ramanujan theta functions.

Table of values

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

List of values

[1, 0, -3, 2, 0, -6, 6, 0, -3, 12, 0, -6, 2, 0, -12, 0, 0, -12, 18, 0, -6, 12, 0, 0, 6, 0, -18, 14, 0, -18, 12, 0, -3, 12, 0, -12, 12, 0, -18, 0, 0, -24, 12, 0, -6, 36, 0, 0, 2, 0, -21, 12, 0, -18, 42, 0, -12, 12, 0, -18, 0, 0, -24, 0, 0, -24, 24, 0, -12, 24, 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.