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.

A139214 Expansion of q * psi(q^2) * psi(-q^9) / (phi(-q^3) * psi(-q^3)) in powers of q where phi(), psi() are Ramanujan theta functions.

Table of values

n a(n)
1 1
2 0
3 1
4 3
5 0
6 3
7 8
8 0
9 7
10 18
11 0
12 15
13 38
14 0
15 30
16 75
17 0
18 57
19 140
20 0
21 104
22 252
23 0
24 183
25 439
26 0
27 313
28 744
29 0
30 522
31 1232
32 0
33 852
34 1998
35 0
36 1365
37 3182
38 0
39 2150
40 4986
41 0
42 3336
43 7700
44 0
45 5106
46 11736
47 0
48 7719
49 17673
50 0
51 11538
52 26322
53 0
54 17067
55 38808
56 0
57 25004
58 56682
59 0

List of values

[1, 0, 1, 3, 0, 3, 8, 0, 7, 18, 0, 15, 38, 0, 30, 75, 0, 57, 140, 0, 104, 252, 0, 183, 439, 0, 313, 744, 0, 522, 1232, 0, 852, 1998, 0, 1365, 3182, 0, 2150, 4986, 0, 3336, 7700, 0, 5106, 11736, 0, 7719, 17673, 0, 11538, 26322, 0, 17067, 38808, 0, 25004, 56682, 0]