A321068 - cp's OEIS frontend

A321068 a(n) = [x^n] Product_{k>=1} ((1 - x^k)/(1 + x^k))^sigma_n(k).

n	a(n)
0	1
1	-2
2	-8
3	-22
4	294
5	24982
6	1372372
7	10145326
8	-38651841784
9	-21995644478504
10	-5088041946350856
11	29713279339187796814
12	155715351422115081062330
13	370606511915720675179342334
14	-12360092915168107023209454901320

[1, -2, -8, -22, 294, 24982, 1372372, 10145326, -38651841784, -21995644478504, -5088041946350856, 29713279339187796814, 155715351422115081062330, 370606511915720675179342334, -12360092915168107023209454901320]

cp's OEIS Frontend

A321068 a(n) = [x^n] Product_{k>=1} ((1 - x^k)/(1 + x^k))^sigma_n(k).

Table of values

List of values