A255257 - cp's OEIS frontend

A255257 Expansion of psi(x) * phi(-x^2)^2 in powers of x where phi(), psi() are Ramanujan theta functions.

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

[1, 1, -4, -3, 4, 0, 1, 4, 0, 4, -3, -4, -4, -8, 8, 1, -4, 0, 0, 4, 0, 5, 4, 8, -4, -4, 4, -8, -3, -4, 4, -4, 0, 0, -8, 4, 1, 0, -8, 0, 4, 8, 8, 8, 0, 1, 0, -8, 8, -4, -4, -8, 12, 4, -12, 1, -4, 0, 0, -4, -8, 4, -8, 0, 0, -8, 1, 12, 8, 8, 0, -8, 8, 0, 8, 4, 0]

cp's OEIS Frontend

A255257 Expansion of psi(x) * phi(-x^2)^2 in powers of x where phi(), psi() are Ramanujan theta functions.

Table of values

List of values

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

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

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