A023881 - cp's OEIS frontend

A023881 Number of partitions in expanding space: sigma(n,q) is the sum of the q-th powers of the divisors of n.

n	a(n)
0	1
1	1
2	3
3	12
4	82
5	725
6	8811
7	128340
8	2257687
9	45658174
10	1052672116
11	27108596725
12	772945749970
13	24137251258926
14	819742344728692
15	30069017799172228
16	1184889562926838573
17	49914141857616862435

[1, 1, 3, 12, 82, 725, 8811, 128340, 2257687, 45658174, 1052672116, 27108596725, 772945749970, 24137251258926, 819742344728692, 30069017799172228, 1184889562926838573, 49914141857616862435]

cp's OEIS Frontend

A023881 Number of partitions in expanding space: sigma(n,q) is the sum of the q-th powers of the divisors of n.

Table of values

List of values