A261202 - cp's OEIS frontend

A261202 Expansion of phi(-x) * phi(-x^9) / f(-x^6)^2 in powers of x where phi(), f() are Ramanujan theta functions.

n	a(n)
0	1
1	-2
2	0
3	0
4	2
5	0
6	2
7	-4
8	0
9	-4
10	8
11	0
12	5
13	-14
14	0
15	-8
16	20
17	0
18	14
19	-28
20	0
21	-20
22	44
23	0
24	28
25	-66
26	0
27	-40
28	90
29	0
30	56
31	-124
32	0
33	-80
34	176
35	0
36	109
37	-244
38	0
39	-144
40	326
41	0
42	198
43	-432
44	0
45	-268
46	580
47	0
48	349
49	-772
50	0
51	-456
52	1004
53	0
54	600
55	-1300
56	0
57	-780
58	1692
59	0
60	1001

[1, -2, 0, 0, 2, 0, 2, -4, 0, -4, 8, 0, 5, -14, 0, -8, 20, 0, 14, -28, 0, -20, 44, 0, 28, -66, 0, -40, 90, 0, 56, -124, 0, -80, 176, 0, 109, -244, 0, -144, 326, 0, 198, -432, 0, -268, 580, 0, 349, -772, 0, -456, 1004, 0, 600, -1300, 0, -780, 1692, 0, 1001]

cp's OEIS Frontend

A261202 Expansion of phi(-x) * phi(-x^9) / f(-x^6)^2 in powers of x where phi(), f() are Ramanujan theta functions.

Table of values

List of values