A137677 - cp's OEIS frontend

A137677 Expansion of f(-x, -x^4) / psi(-x) where psi() is a Ramanujan theta function and f(, ) is Ramanujan's general theta function.

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

[1, 0, 0, 1, 0, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 2, 2, 0, 0, 2, 2, 0, 0, 3, 4, 0, 0, 4, 4, 0, 0, 5, 6, 0, 0, 7, 7, 0, 0, 9, 10, 0, 0, 11, 11, 0, 0, 14, 16, 0, 0, 18, 18, 0, 0, 22, 24, 0, 0, 27, 28, 0, 0, 34, 36, 0, 0, 41, 42, 0, 0, 50, 54, 0, 0, 61, 62, 0, 0, 73]

cp's OEIS Frontend

A137677 Expansion of f(-x, -x^4) / psi(-x) where psi() is a Ramanujan theta function and f(, ) is Ramanujan's general theta function.

Table of values

List of values

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

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

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