A209613 - cp's OEIS frontend

A209613 Expansion of q * phi(-q^2)^2 * psi(q^3) * psi(-q^3)^2 / psi(q) in powers of q where phi(), psi() are Ramanujan theta functions.

n	a(n)
1	1
2	-1
3	-3
4	1
5	4
6	3
7	-6
8	-1
9	9
10	-4
11	-12
12	-3
13	14
14	6
15	-12
16	1
17	16
18	-9
19	-18
20	4
21	18
22	12
23	-24
24	3
25	21
26	-14
27	-27
28	-6
29	28
30	12
31	-30
32	-1
33	36
34	-16
35	-24
36	9
37	38
38	18
39	-42
40	-4
41	40
42	-18
43	-42
44	-12
45	36
46	24
47	-48
48	-3
49	43
50	-21
51	-48
52	14
53	52
54	27
55	-48
56	6
57	54
58	-28
59	-60
60	-12
61	62
62	30

[1, -1, -3, 1, 4, 3, -6, -1, 9, -4, -12, -3, 14, 6, -12, 1, 16, -9, -18, 4, 18, 12, -24, 3, 21, -14, -27, -6, 28, 12, -30, -1, 36, -16, -24, 9, 38, 18, -42, -4, 40, -18, -42, -12, 36, 24, -48, -3, 43, -21, -48, 14, 52, 27, -48, 6, 54, -28, -60, -12, 62, 30]

cp's OEIS Frontend

A209613 Expansion of q * phi(-q^2)^2 * psi(q^3) * psi(-q^3)^2 / psi(q) in powers of q where phi(), psi() are Ramanujan theta functions.

Table of values

List of values

n	a(n)
1	1
2	-1
3	-3
4	1
5	4
6	3
7	-6
8	-1
9	9
10	-4
11	-12
12	-3
13	14
14	6
15	-12
16	1
17	16
18	-9
19	-18
20	4
21	18
22	12
23	-24
24	3
25	21
26	-14
27	-27
28	-6
29	28
30	12
31	-30
32	-1
33	36
34	-16
35	-24
36	9
37	38
38	18
39	-42
40	-4
41	40
42	-18
43	-42
44	-12
45	36
46	24
47	-48
48	-3
49	43
50	-21
51	-48
52	14
53	52
54	27
55	-48
56	6
57	54
58	-28
59	-60
60	-12
61	62
62	30

n	a(n)
1	1
2	-1
3	-3
4	1
5	4
6	3
7	-6
8	-1
9	9
10	-4
11	-12
12	-3
13	14
14	6
15	-12
16	1
17	16
18	-9
19	-18
20	4
21	18
22	12
23	-24
24	3
25	21
26	-14
27	-27
28	-6
29	28
30	12
31	-30
32	-1
33	36
34	-16
35	-24
36	9
37	38
38	18
39	-42
40	-4
41	40
42	-18
43	-42
44	-12
45	36
46	24
47	-48
48	-3
49	43
50	-21
51	-48
52	14
53	52
54	27
55	-48
56	6
57	54
58	-28
59	-60
60	-12
61	62
62	30

n	a(n)
1	1
2	-1
3	-3
4	1
5	4
6	3
7	-6
8	-1
9	9
10	-4
11	-12
12	-3
13	14
14	6
15	-12
16	1
17	16
18	-9
19	-18
20	4
21	18
22	12
23	-24
24	3
25	21
26	-14
27	-27
28	-6
29	28
30	12
31	-30
32	-1
33	36
34	-16
35	-24
36	9
37	38
38	18
39	-42
40	-4
41	40
42	-18
43	-42
44	-12
45	36
46	24
47	-48
48	-3
49	43
50	-21
51	-48
52	14
53	52
54	27
55	-48
56	6
57	54
58	-28
59	-60
60	-12
61	62
62	30