A305127 - cp's OEIS frontend

A305127 Expansion of e.g.f. Product_{k>=1} 1/(1 - x^k)^(sigma(k)/k), where sigma(k) is the sum of the divisors of k.

n	a(n)
0	1
1	1
2	5
3	23
4	179
5	1279
6	13699
7	135085
8	1764377
9	22527521
10	344625461
11	5283739471
12	94562354875
13	1685808248383
14	33947023942259
15	694786150879829
16	15613612524749489
17	357353282848083265
18	8880505496901812197
19	224851013929747732231
20	6106205671049245677251
21	169523515381173773551871

[1, 1, 5, 23, 179, 1279, 13699, 135085, 1764377, 22527521, 344625461, 5283739471, 94562354875, 1685808248383, 33947023942259, 694786150879829, 15613612524749489, 357353282848083265, 8880505496901812197, 224851013929747732231, 6106205671049245677251, 169523515381173773551871]

cp's OEIS Frontend

A305127 Expansion of e.g.f. Product_{k>=1} 1/(1 - x^k)^(sigma(k)/k), where sigma(k) is the sum of the divisors of k.

Table of values

List of values