A140728 - cp's OEIS frontend

A140728 Expansion of (phi(-q^3) * phi(-q^5) - phi(-q) * phi(-q^15)) / 2 in powers of q where phi() is a Ramanujan theta function.

n	a(n)
1	1
2	0
3	-1
4	-1
5	-1
6	0
7	0
8	2
9	1
10	0
11	0
12	1
13	0
14	0
15	1
16	-3
17	-2
18	0
19	2
20	1
21	0
22	0
23	-2
24	-2
25	1
26	0
27	-1
28	0
29	0
30	0
31	2
32	4
33	0
34	0
35	0
36	-1
37	0
38	0
39	0
40	-2
41	0
42	0
43	0
44	0
45	-1
46	0
47	-2
48	3
49	1
50	0
51	2
52	0
53	-2
54	0
55	0
56	0
57	-2
58	0
59	0
60	-1
61	2
62	0
63	0
64	-5
65	0
66	0
67	0
68	2
69	2
70	0
71	0
72	2
73	0
74	0
75	-1
76	-2
77	0
78	0
79	2
80	3
81	1
82	0
83	-2
84	0
85	2
86	0
87	0
88	0
89	0
90	0
91	0
92	2
93	-2
94	0
95	-2
96	-4
97	0
98	0
99	0
100	-1
101	0
102	0
103	0
104	0
105	0

[1, 0, -1, -1, -1, 0, 0, 2, 1, 0, 0, 1, 0, 0, 1, -3, -2, 0, 2, 1, 0, 0, -2, -2, 1, 0, -1, 0, 0, 0, 2, 4, 0, 0, 0, -1, 0, 0, 0, -2, 0, 0, 0, 0, -1, 0, -2, 3, 1, 0, 2, 0, -2, 0, 0, 0, -2, 0, 0, -1, 2, 0, 0, -5, 0, 0, 0, 2, 2, 0, 0, 2, 0, 0, -1, -2, 0, 0, 2, 3, 1, 0, -2, 0, 2, 0, 0, 0, 0, 0, 0, 2, -2, 0, -2, -4, 0, 0, 0, -1, 0, 0, 0, 0, 0]

cp's OEIS Frontend

A140728 Expansion of (phi(-q^3) * phi(-q^5) - phi(-q) * phi(-q^15)) / 2 in powers of q where phi() is a Ramanujan theta function.

Table of values

List of values

n	a(n)
1	1
2	0
3	-1
4	-1
5	-1
6	0
7	0
8	2
9	1
10	0
11	0
12	1
13	0
14	0
15	1
16	-3
17	-2
18	0
19	2
20	1
21	0
22	0
23	-2
24	-2
25	1
26	0
27	-1
28	0
29	0
30	0
31	2
32	4
33	0
34	0
35	0
36	-1
37	0
38	0
39	0
40	-2
41	0
42	0
43	0
44	0
45	-1
46	0
47	-2
48	3
49	1
50	0
51	2
52	0
53	-2
54	0
55	0
56	0
57	-2
58	0
59	0
60	-1
61	2
62	0
63	0
64	-5
65	0
66	0
67	0
68	2
69	2
70	0
71	0
72	2
73	0
74	0
75	-1
76	-2
77	0
78	0
79	2
80	3
81	1
82	0
83	-2
84	0
85	2
86	0
87	0
88	0
89	0
90	0
91	0
92	2
93	-2
94	0
95	-2
96	-4
97	0
98	0
99	0
100	-1
101	0
102	0
103	0
104	0
105	0

n	a(n)
1	1
2	0
3	-1
4	-1
5	-1
6	0
7	0
8	2
9	1
10	0
11	0
12	1
13	0
14	0
15	1
16	-3
17	-2
18	0
19	2
20	1
21	0
22	0
23	-2
24	-2
25	1
26	0
27	-1
28	0
29	0
30	0
31	2
32	4
33	0
34	0
35	0
36	-1
37	0
38	0
39	0
40	-2
41	0
42	0
43	0
44	0
45	-1
46	0
47	-2
48	3
49	1
50	0
51	2
52	0
53	-2
54	0
55	0
56	0
57	-2
58	0
59	0
60	-1
61	2
62	0
63	0
64	-5
65	0
66	0
67	0
68	2
69	2
70	0
71	0
72	2
73	0
74	0
75	-1
76	-2
77	0
78	0
79	2
80	3
81	1
82	0
83	-2
84	0
85	2
86	0
87	0
88	0
89	0
90	0
91	0
92	2
93	-2
94	0
95	-2
96	-4
97	0
98	0
99	0
100	-1
101	0
102	0
103	0
104	0
105	0

n	a(n)
1	1
2	0
3	-1
4	-1
5	-1
6	0
7	0
8	2
9	1
10	0
11	0
12	1
13	0
14	0
15	1
16	-3
17	-2
18	0
19	2
20	1
21	0
22	0
23	-2
24	-2
25	1
26	0
27	-1
28	0
29	0
30	0
31	2
32	4
33	0
34	0
35	0
36	-1
37	0
38	0
39	0
40	-2
41	0
42	0
43	0
44	0
45	-1
46	0
47	-2
48	3
49	1
50	0
51	2
52	0
53	-2
54	0
55	0
56	0
57	-2
58	0
59	0
60	-1
61	2
62	0
63	0
64	-5
65	0
66	0
67	0
68	2
69	2
70	0
71	0
72	2
73	0
74	0
75	-1
76	-2
77	0
78	0
79	2
80	3
81	1
82	0
83	-2
84	0
85	2
86	0
87	0
88	0
89	0
90	0
91	0
92	2
93	-2
94	0
95	-2
96	-4
97	0
98	0
99	0
100	-1
101	0
102	0
103	0
104	0
105	0