A139213 - cp's OEIS frontend

A139213 Expansion of phi(q) * phi(-q^18) / (phi(-q^3) * phi(-q^6)) in powers of q where phi() is a Ramanujan theta function.

n	a(n)
0	1
1	2
2	0
3	2
4	6
5	0
6	6
7	16
8	0
9	14
10	36
11	0
12	30
13	76
14	0
15	60
16	150
17	0
18	114
19	280
20	0
21	208
22	504
23	0
24	366
25	878
26	0
27	626
28	1488
29	0
30	1044
31	2464
32	0
33	1704
34	3996
35	0
36	2730
37	6364
38	0
39	4300
40	9972
41	0
42	6672
43	15400
44	0
45	10212
46	23472
47	0
48	15438
49	35346
50	0
51	23076
52	52644
53	0
54	34134
55	77616
56	0

[1, 2, 0, 2, 6, 0, 6, 16, 0, 14, 36, 0, 30, 76, 0, 60, 150, 0, 114, 280, 0, 208, 504, 0, 366, 878, 0, 626, 1488, 0, 1044, 2464, 0, 1704, 3996, 0, 2730, 6364, 0, 4300, 9972, 0, 6672, 15400, 0, 10212, 23472, 0, 15438, 35346, 0, 23076, 52644, 0, 34134, 77616, 0]

cp's OEIS Frontend

A139213 Expansion of phi(q) * phi(-q^18) / (phi(-q^3) * phi(-q^6)) in powers of q where phi() is a Ramanujan theta function.

Table of values

List of values