A319363 - cp's OEIS frontend

A319363 a(n) = [x^n] exp(Sum_{k>=1} sigma(k^n)*x^k/k).

n	a(n)
0	1
1	1
2	4
3	21
4	296
5	5677
6	291348
7	22679763
8	3946629792
9	1281287791090
10	840017139222515
11	1068253745514088673
12	2745322115165570881474
13	14006438682727577999625359
14	141884380264686466724199980066
15	2897075017978846591982107951045864
16	118770312781918226439371316982748736112

[1, 1, 4, 21, 296, 5677, 291348, 22679763, 3946629792, 1281287791090, 840017139222515, 1068253745514088673, 2745322115165570881474, 14006438682727577999625359, 141884380264686466724199980066, 2897075017978846591982107951045864, 118770312781918226439371316982748736112]

cp's OEIS Frontend

A319363 a(n) = [x^n] exp(Sum_{k>=1} sigma(k^n)*x^k/k).

Table of values

List of values