A160505 - cp's OEIS frontend

A160505 a(1)=1, a(n) = p*a(n-1), where p is the smallest prime satisfying gcd(n,p)=1.

n	a(n)
1	1
2	3
3	6
4	18
5	36
6	180
7	360
8	1080
9	2160
10	6480
11	12960
12	64800
13	129600
14	388800
15	777600
16	2332800
17	4665600
18	23328000
19	46656000
20	139968000
21	279936000
22	839808000
23	1679616000
24	8398080000
25	16796160000
26	50388480000
27	100776960000

[1, 3, 6, 18, 36, 180, 360, 1080, 2160, 6480, 12960, 64800, 129600, 388800, 777600, 2332800, 4665600, 23328000, 46656000, 139968000, 279936000, 839808000, 1679616000, 8398080000, 16796160000, 50388480000, 100776960000]

cp's OEIS Frontend

A160505 a(1)=1, a(n) = p*a(n-1), where p is the smallest prime satisfying gcd(n,p)=1.

Table of values

List of values