A230322 - cp's OEIS frontend

A230322 Expansion of f(-x^3, -x^4) / f(-x^2,-x^5) in powers of x where f(,) is Ramanujan's two-variable theta function.

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

[1, 0, 1, -1, 0, 0, 0, 1, -1, 1, -1, 0, 0, -1, 2, -1, 2, -2, 0, 0, -1, 3, -3, 3, -3, 1, 0, -2, 5, -4, 5, -5, 1, 0, -3, 7, -7, 8, -7, 2, 0, -5, 11, -10, 12, -11, 3, 1, -7, 15, -16, 17, -15, 5, 1, -11, 22, -22, 25, -22, 7, 2, -15, 31, -33, 35, -30, 11, 2, -22]

cp's OEIS Frontend

A230322 Expansion of f(-x^3, -x^4) / f(-x^2,-x^5) in powers of x where f(,) is Ramanujan's two-variable theta function.

Table of values

List of values

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

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

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