A143161 - cp's OEIS frontend

A143161 Expansion of chi(-x)^2 * chi(-x^2) in powers of x where chi() is a Ramanujan theta function.

n	a(n)
0	1
1	-2
2	0
3	0
4	3
5	-2
6	0
7	0
8	4
9	-6
10	0
11	0
12	7
13	-8
14	0
15	0
16	13
17	-14
18	0
19	0
20	19
21	-20
22	0
23	0
24	29
25	-34
26	0
27	0
28	43
29	-46
30	0
31	0
32	62
33	-70
34	0
35	0
36	90
37	-96
38	0
39	0
40	126
41	-138
42	0
43	0
44	174
45	-186
46	0
47	0
48	239
49	-262
50	0
51	0
52	325
53	-346
54	0
55	0
56	435
57	-472
58	0
59	0
60	580
61	-620
62	0
63	0
64	769
65	-826
66	0
67	0

[1, -2, 0, 0, 3, -2, 0, 0, 4, -6, 0, 0, 7, -8, 0, 0, 13, -14, 0, 0, 19, -20, 0, 0, 29, -34, 0, 0, 43, -46, 0, 0, 62, -70, 0, 0, 90, -96, 0, 0, 126, -138, 0, 0, 174, -186, 0, 0, 239, -262, 0, 0, 325, -346, 0, 0, 435, -472, 0, 0, 580, -620, 0, 0, 769, -826, 0, 0]

cp's OEIS Frontend

A143161 Expansion of chi(-x)^2 * chi(-x^2) in powers of x where chi() is a Ramanujan theta function.

Table of values

List of values