A145724 - cp's OEIS frontend

A145724 Expansion of q * f(-q^20) / (f(q) * chi(-q^5)) in powers of q where f(), chi() are Ramanujan theta functions.

n	a(n)
1	1
2	-1
3	2
4	-3
5	5
6	-6
7	10
8	-13
9	19
10	-25
11	36
12	-46
13	64
14	-82
15	110
16	-139
17	184
18	-231
19	300
20	-375
21	480
22	-596
23	754
24	-930
25	1165
26	-1428
27	1772
28	-2162
29	2662
30	-3230
31	3952
32	-4773
33	5800
34	-6976
35	8430
36	-10093
37	12136
38	-14476
39	17320
40	-20585
41	24526
42	-29044
43	34466
44	-40684
45	48095

[1, -1, 2, -3, 5, -6, 10, -13, 19, -25, 36, -46, 64, -82, 110, -139, 184, -231, 300, -375, 480, -596, 754, -930, 1165, -1428, 1772, -2162, 2662, -3230, 3952, -4773, 5800, -6976, 8430, -10093, 12136, -14476, 17320, -20585, 24526, -29044, 34466, -40684, 48095]

cp's OEIS Frontend

A145724 Expansion of q * f(-q^20) / (f(q) * chi(-q^5)) in powers of q where f(), chi() are Ramanujan theta functions.

Table of values

List of values