A245572 - cp's OEIS frontend

A245572 Expansion of phi(q) * phi(q^2) + 2 * phi(-q^2) * phi(q^4) in powers of q where phi() is a Ramanujan theta function.

n	a(n)
0	3
1	2
2	-2
3	4
4	6
5	0
6	-4
7	0
8	6
9	6
10	0
11	4
12	12
13	0
14	0
15	0
16	6
17	4
18	-6
19	4
20	0
21	0
22	-4
23	0
24	12
25	2
26	0
27	8
28	0
29	0
30	0
31	0
32	6
33	8
34	-4
35	0
36	18
37	0
38	-4
39	0
40	0
41	4
42	0
43	4
44	12
45	0
46	0
47	0
48	12
49	2
50	-2
51	8
52	0
53	0
54	-8
55	0
56	0
57	8
58	0
59	4
60	0
61	0
62	0
63	0
64	6
65	0
66	-8
67	4
68	12
69	0
70	0
71	0
72	18
73	4
74	0
75	4
76	12
77	0
78	0
79	0
80	0

[3, 2, -2, 4, 6, 0, -4, 0, 6, 6, 0, 4, 12, 0, 0, 0, 6, 4, -6, 4, 0, 0, -4, 0, 12, 2, 0, 8, 0, 0, 0, 0, 6, 8, -4, 0, 18, 0, -4, 0, 0, 4, 0, 4, 12, 0, 0, 0, 12, 2, -2, 8, 0, 0, -8, 0, 0, 8, 0, 4, 0, 0, 0, 0, 6, 0, -8, 4, 12, 0, 0, 0, 18, 4, 0, 4, 12, 0, 0, 0, 0]

cp's OEIS Frontend

A245572 Expansion of phi(q) * phi(q^2) + 2 * phi(-q^2) * phi(q^4) in powers of q where phi() is a Ramanujan theta function.

Table of values

List of values

n	a(n)
0	3
1	2
2	-2
3	4
4	6
5	0
6	-4
7	0
8	6
9	6
10	0
11	4
12	12
13	0
14	0
15	0
16	6
17	4
18	-6
19	4
20	0
21	0
22	-4
23	0
24	12
25	2
26	0
27	8
28	0
29	0
30	0
31	0
32	6
33	8
34	-4
35	0
36	18
37	0
38	-4
39	0
40	0
41	4
42	0
43	4
44	12
45	0
46	0
47	0
48	12
49	2
50	-2
51	8
52	0
53	0
54	-8
55	0
56	0
57	8
58	0
59	4
60	0
61	0
62	0
63	0
64	6
65	0
66	-8
67	4
68	12
69	0
70	0
71	0
72	18
73	4
74	0
75	4
76	12
77	0
78	0
79	0
80	0

n	a(n)
0	3
1	2
2	-2
3	4
4	6
5	0
6	-4
7	0
8	6
9	6
10	0
11	4
12	12
13	0
14	0
15	0
16	6
17	4
18	-6
19	4
20	0
21	0
22	-4
23	0
24	12
25	2
26	0
27	8
28	0
29	0
30	0
31	0
32	6
33	8
34	-4
35	0
36	18
37	0
38	-4
39	0
40	0
41	4
42	0
43	4
44	12
45	0
46	0
47	0
48	12
49	2
50	-2
51	8
52	0
53	0
54	-8
55	0
56	0
57	8
58	0
59	4
60	0
61	0
62	0
63	0
64	6
65	0
66	-8
67	4
68	12
69	0
70	0
71	0
72	18
73	4
74	0
75	4
76	12
77	0
78	0
79	0
80	0

n	a(n)
0	3
1	2
2	-2
3	4
4	6
5	0
6	-4
7	0
8	6
9	6
10	0
11	4
12	12
13	0
14	0
15	0
16	6
17	4
18	-6
19	4
20	0
21	0
22	-4
23	0
24	12
25	2
26	0
27	8
28	0
29	0
30	0
31	0
32	6
33	8
34	-4
35	0
36	18
37	0
38	-4
39	0
40	0
41	4
42	0
43	4
44	12
45	0
46	0
47	0
48	12
49	2
50	-2
51	8
52	0
53	0
54	-8
55	0
56	0
57	8
58	0
59	4
60	0
61	0
62	0
63	0
64	6
65	0
66	-8
67	4
68	12
69	0
70	0
71	0
72	18
73	4
74	0
75	4
76	12
77	0
78	0
79	0
80	0