A057642 - cp's OEIS frontend

A057642 (Product k^k) * (Sum 1/k^k) where both the sum and product are over those positive integers k that divide n.

n	a(n)
1	1
2	5
3	28
4	1284
5	3126
6	6485292
7	823544
8	21541946368
9	10847773719
10	156290000012500
11	285311670612
12	14847746691430172786688
13	302875106592254
14	45756121633729931379676
15	38327538543365478600000
16	397378771500072999738379599872
17	827240261886336764178

[1, 5, 28, 1284, 3126, 6485292, 823544, 21541946368, 10847773719, 156290000012500, 285311670612, 14847746691430172786688, 302875106592254, 45756121633729931379676, 38327538543365478600000, 397378771500072999738379599872, 827240261886336764178]

cp's OEIS Frontend

A057642 (Product k^k) * (Sum 1/k^k) where both the sum and product are over those positive integers k that divide n.

Table of values

List of values