A140727 - cp's OEIS frontend

A140727 Expansion of (phi(q) * phi(q^15) - phi(q^3) * phi(q^5)) / 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

A140727 Expansion of (phi(q) * phi(q^15) - phi(q^3) * phi(q^5)) / 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