A106508 - cp's OEIS frontend

A106508 Expansion of psi(x)^4 * chi(-x^2)^2 in powers of x where psi(), chi() are Ramanujan theta functions.

n	a(n)
0	1
1	4
2	4
3	0
4	2
5	0
6	-8
7	0
8	-5
9	-16
10	4
11	0
12	-10
13	0
14	-8
15	0
16	9
17	8
18	0
19	0
20	14
21	0
22	16
23	0
24	-10
25	32
26	4
27	0
28	0
29	0
30	8
31	0
32	14
33	-20
34	-20
35	0
36	2
37	0
38	0
39	0
40	-11
41	-16
42	-20
43	0
44	-32
45	0
46	16
47	0
48	0
49	-40
50	4
51	0
52	14
53	0
54	-8
55	0
56	-9
57	32
58	-20
59	0
60	26
61	0
62	0
63	0
64	2
65	36
66	28
67	0
68	0
69	0
70	16
71	0
72	16
73	0
74	28
75	0
76	-22
77	0
78	0
79	0
80	14
81	56
82	-16
83	0
84	0
85	0
86	-40
87	0
88	0

[1, 4, 4, 0, 2, 0, -8, 0, -5, -16, 4, 0, -10, 0, -8, 0, 9, 8, 0, 0, 14, 0, 16, 0, -10, 32, 4, 0, 0, 0, 8, 0, 14, -20, -20, 0, 2, 0, 0, 0, -11, -16, -20, 0, -32, 0, 16, 0, 0, -40, 4, 0, 14, 0, -8, 0, -9, 32, -20, 0, 26, 0, 0, 0, 2, 36, 28, 0, 0, 0, 16, 0, 16, 0, 28, 0, -22, 0, 0, 0, 14, 56, -16, 0, 0, 0, -40, 0, 0]

cp's OEIS Frontend

A106508 Expansion of psi(x)^4 * chi(-x^2)^2 in powers of x where psi(), chi() are Ramanujan theta functions.

Table of values

List of values

n	a(n)
0	1
1	4
2	4
3	0
4	2
5	0
6	-8
7	0
8	-5
9	-16
10	4
11	0
12	-10
13	0
14	-8
15	0
16	9
17	8
18	0
19	0
20	14
21	0
22	16
23	0
24	-10
25	32
26	4
27	0
28	0
29	0
30	8
31	0
32	14
33	-20
34	-20
35	0
36	2
37	0
38	0
39	0
40	-11
41	-16
42	-20
43	0
44	-32
45	0
46	16
47	0
48	0
49	-40
50	4
51	0
52	14
53	0
54	-8
55	0
56	-9
57	32
58	-20
59	0
60	26
61	0
62	0
63	0
64	2
65	36
66	28
67	0
68	0
69	0
70	16
71	0
72	16
73	0
74	28
75	0
76	-22
77	0
78	0
79	0
80	14
81	56
82	-16
83	0
84	0
85	0
86	-40
87	0
88	0

n	a(n)
0	1
1	4
2	4
3	0
4	2
5	0
6	-8
7	0
8	-5
9	-16
10	4
11	0
12	-10
13	0
14	-8
15	0
16	9
17	8
18	0
19	0
20	14
21	0
22	16
23	0
24	-10
25	32
26	4
27	0
28	0
29	0
30	8
31	0
32	14
33	-20
34	-20
35	0
36	2
37	0
38	0
39	0
40	-11
41	-16
42	-20
43	0
44	-32
45	0
46	16
47	0
48	0
49	-40
50	4
51	0
52	14
53	0
54	-8
55	0
56	-9
57	32
58	-20
59	0
60	26
61	0
62	0
63	0
64	2
65	36
66	28
67	0
68	0
69	0
70	16
71	0
72	16
73	0
74	28
75	0
76	-22
77	0
78	0
79	0
80	14
81	56
82	-16
83	0
84	0
85	0
86	-40
87	0
88	0

n	a(n)
0	1
1	4
2	4
3	0
4	2
5	0
6	-8
7	0
8	-5
9	-16
10	4
11	0
12	-10
13	0
14	-8
15	0
16	9
17	8
18	0
19	0
20	14
21	0
22	16
23	0
24	-10
25	32
26	4
27	0
28	0
29	0
30	8
31	0
32	14
33	-20
34	-20
35	0
36	2
37	0
38	0
39	0
40	-11
41	-16
42	-20
43	0
44	-32
45	0
46	16
47	0
48	0
49	-40
50	4
51	0
52	14
53	0
54	-8
55	0
56	-9
57	32
58	-20
59	0
60	26
61	0
62	0
63	0
64	2
65	36
66	28
67	0
68	0
69	0
70	16
71	0
72	16
73	0
74	28
75	0
76	-22
77	0
78	0
79	0
80	14
81	56
82	-16
83	0
84	0
85	0
86	-40
87	0
88	0