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.

A228834 Expansion of phi(-x^2)^2 * psi(-x)^4 in powers of x where phi(), psi() are Ramanujan theta functions.

Table of values

n a(n)
0 1
1 -4
2 2
3 8
4 -7
5 4
6 -14
7 -8
8 18
9 12
10 32
11 -40
12 -21
13 -8
14 -14
15 32
16 16
17 16
18 -30
19 56
20 -14
21 -28
22 -14
23 -16
24 -15
25 -72
26 66
27 8
28 48
29 52
30 82
31 -56
32 -28
33 -4
34 -160
35 -56
36 66
37 84
38 -32
39 16
40 -95
41 140
42 36
43 56
44 -30
45 -112
46 128
47 24
48 -14
49 -28
50 -94
51 -152
52 64
53 -156
54 18
55 120
56 98
57 -80

List of values

[1, -4, 2, 8, -7, 4, -14, -8, 18, 12, 32, -40, -21, -8, -14, 32, 16, 16, -30, 56, -14, -28, -14, -16, -15, -72, 66, 8, 48, 52, 82, -56, -28, -4, -160, -56, 66, 84, -32, 16, -95, 140, 36, 56, -30, -112, 128, 24, -14, -28, -94, -152, 64, -156, 18, 120, 98, -80]