A067858 - cp's OEIS frontend

A067858 J_n(n), where J is the Jordan function, J_n(n) = n^n product{p|n}(1 - 1/p^n), the product is over the distinct primes, p, dividing n.

n	a(n)
1	1
2	3
3	26
4	240
5	3124
6	45864
7	823542
8	16711680
9	387400806
10	9990233352
11	285311670610
12	8913906892800
13	302875106592252
14	11111328602468784
15	437893859848932344
16	18446462598732840960
17	827240261886336764176
18	39346257879101671328376
19	1978419655660313589123978

[1, 3, 26, 240, 3124, 45864, 823542, 16711680, 387400806, 9990233352, 285311670610, 8913906892800, 302875106592252, 11111328602468784, 437893859848932344, 18446462598732840960, 827240261886336764176, 39346257879101671328376, 1978419655660313589123978]

cp's OEIS Frontend

A067858 J_n(n), where J is the Jordan function, J_n(n) = n^n product{p|n}(1 - 1/p^n), the product is over the distinct primes, p, dividing n.

Table of values

List of values