A209452 - cp's OEIS frontend

A209452 a(n) = Pell(n)*A122859(n) for n>=1, with a(0)=1, where A122859 lists the coefficients in phi(-q)^3/phi(-q^3) and phi() is a Ramanujan theta function.

n	a(n)
0	1
1	-6
2	24
3	-30
4	-72
5	0
6	840
7	-2028
8	4896
9	-5910
10	0
11	0
12	-83160
13	-401532
14	1938768
15	0
16	-2824992
17	0
18	32930520
19	-79501308
20	0
21	-463367580
22	0
23	0
24	6520076640
25	-7870428726
26	76003583088
27	-45872220270
28	-221490672624
29	0
30	0
31	-3116610274188
32	7524162792576
33	0
34	0
35	0
36	-127800022137480

[1, -6, 24, -30, -72, 0, 840, -2028, 4896, -5910, 0, 0, -83160, -401532, 1938768, 0, -2824992, 0, 32930520, -79501308, 0, -463367580, 0, 0, 6520076640, -7870428726, 76003583088, -45872220270, -221490672624, 0, 0, -3116610274188, 7524162792576, 0, 0, 0, -127800022137480]

cp's OEIS Frontend

A209452 a(n) = Pell(n)*A122859(n) for n>=1, with a(0)=1, where A122859 lists the coefficients in phi(-q)^3/phi(-q^3) and phi() is a Ramanujan theta function.

Table of values

List of values