A208604 - cp's OEIS frontend

A208604 Expansion of phi(-q) / phi(q^4) in powers of q where phi() is a Ramanujan theta function.

n	a(n)
0	1
1	-2
2	0
3	0
4	0
5	4
6	0
7	0
8	0
9	-10
10	0
11	0
12	0
13	20
14	0
15	0
16	0
17	-36
18	0
19	0
20	0
21	64
22	0
23	0
24	0
25	-110
26	0
27	0
28	0
29	180
30	0
31	0
32	0
33	-288
34	0
35	0
36	0
37	452
38	0
39	0
40	0
41	-692
42	0
43	0
44	0
45	1044
46	0
47	0
48	0
49	-1554
50	0
51	0
52	0
53	2276
54	0
55	0
56	0
57	-3296
58	0
59	0
60	0
61	4724
62	0
63	0
64	0
65	-6696
66	0
67	0
68	0
69	9408
70	0
71	0

[1, -2, 0, 0, 0, 4, 0, 0, 0, -10, 0, 0, 0, 20, 0, 0, 0, -36, 0, 0, 0, 64, 0, 0, 0, -110, 0, 0, 0, 180, 0, 0, 0, -288, 0, 0, 0, 452, 0, 0, 0, -692, 0, 0, 0, 1044, 0, 0, 0, -1554, 0, 0, 0, 2276, 0, 0, 0, -3296, 0, 0, 0, 4724, 0, 0, 0, -6696, 0, 0, 0, 9408, 0, 0]

cp's OEIS Frontend

A208604 Expansion of phi(-q) / phi(q^4) in powers of q where phi() is a Ramanujan theta function.

Table of values

List of values