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.

A121456 Expansion of q*(psi(-q)*psi(-q^3))^2 in powers of q where psi() is a Ramanujan theta function.

Table of values

n a(n)
1 1
2 -2
3 1
4 -4
5 6
6 -2
7 8
8 -8
9 1
10 -12
11 12
12 -4
13 14
14 -16
15 6
16 -16
17 18
18 -2
19 20
20 -24
21 8
22 -24
23 24
24 -8
25 31
26 -28
27 1
28 -32
29 30
30 -12
31 32
32 -32
33 12
34 -36
35 48
36 -4
37 38
38 -40
39 14
40 -48
41 42
42 -16
43 44
44 -48
45 6
46 -48
47 48
48 -16
49 57
50 -62
51 18
52 -56
53 54
54 -2
55 72
56 -64
57 20
58 -60
59 60
60 -24
61 62
62 -64
63 8
64 -64
65 84
66 -24
67 68
68 -72
69 24
70 -96
71 72
72 -8
73 74
74 -76
75 31
76 -80

List of values

[1, -2, 1, -4, 6, -2, 8, -8, 1, -12, 12, -4, 14, -16, 6, -16, 18, -2, 20, -24, 8, -24, 24, -8, 31, -28, 1, -32, 30, -12, 32, -32, 12, -36, 48, -4, 38, -40, 14, -48, 42, -16, 44, -48, 6, -48, 48, -16, 57, -62, 18, -56, 54, -2, 72, -64, 20, -60, 60, -24, 62, -64, 8, -64, 84, -24, 68, -72, 24, -96, 72, -8, 74, -76, 31, -80]