A261251 - cp's OEIS frontend

A261251 Expansion of f(-x, -x) * f(-x^3, -x^15) / f(-x^6, -x^12)^2 in powers of x where f(,) is Ramanujan's general theta function.

n	a(n)
0	1
1	-2
2	0
3	-1
4	4
5	0
6	2
7	-6
8	0
9	-4
10	8
11	0
12	7
13	-14
14	0
15	-10
16	24
17	0
18	14
19	-34
20	0
21	-22
22	48
23	0
24	33
25	-72
26	0
27	-45
28	104
29	0
30	62
31	-142
32	0
33	-88
34	192
35	0
36	122
37	-266
38	0
39	-163
40	364
41	0
42	216
43	-480
44	0
45	-290
46	632
47	0
48	386
49	-840
50	0
51	-502
52	1104
53	0
54	650
55	-1426
56	0
57	-846
58	1832
59	0
60	1093

[1, -2, 0, -1, 4, 0, 2, -6, 0, -4, 8, 0, 7, -14, 0, -10, 24, 0, 14, -34, 0, -22, 48, 0, 33, -72, 0, -45, 104, 0, 62, -142, 0, -88, 192, 0, 122, -266, 0, -163, 364, 0, 216, -480, 0, -290, 632, 0, 386, -840, 0, -502, 1104, 0, 650, -1426, 0, -846, 1832, 0, 1093]

cp's OEIS Frontend

A261251 Expansion of f(-x, -x) * f(-x^3, -x^15) / f(-x^6, -x^12)^2 in powers of x where f(,) is Ramanujan's general theta function.

Table of values

List of values