A164273 - cp's OEIS frontend

A164273 Expansion of phi(-q) * phi(q^3) in powers of q where phi() is a Ramanujan theta function.

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

[1, -2, 0, 2, -2, 0, 0, 4, 0, -2, 0, 0, -2, -4, 0, 0, 6, 0, 0, 4, 0, -4, 0, 0, 0, -2, 0, 2, -4, 0, 0, 4, 0, 0, 0, 0, -2, -4, 0, 4, 0, 0, 0, 4, 0, 0, 0, 0, 6, -6, 0, 0, -4, 0, 0, 0, 0, -4, 0, 0, 0, -4, 0, 4, 6, 0, 0, 4, 0, 0, 0, 0, 0, -4, 0, 2, -4, 0, 0, 4, 0, -2, 0, 0, -4, 0, 0, 0, 0, 0, 0, 8, 0, -4, 0, 0, 0, -4, 0, 0, -2, 0, 0, 4, 0]

cp's OEIS Frontend

A164273 Expansion of phi(-q) * phi(q^3) in powers of q where phi() is a Ramanujan theta function.

Table of values

List of values

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

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

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