A337775 - cp's OEIS frontend

A337775 a(n) is the least natural k which is a multiple of prime(n) such that for some m >= 0, phi(k) = rad(k)^m, where phi(k) = A000010(k) and rad(k) = A007947(k).

n	a(n)
1	2
2	18
3	250
4	6174
5	3660250
6	1542294
7	2839714
8	41154
9	117793122328750
10	7978057537338
11	2898701538750
12	33734898
13	29688151506250
14	21107677374
15	69834458642125879757481250
16	3999523458421521342

[2, 18, 250, 6174, 3660250, 1542294, 2839714, 41154, 117793122328750, 7978057537338, 2898701538750, 33734898, 29688151506250, 21107677374, 69834458642125879757481250, 3999523458421521342]

cp's OEIS Frontend

A337775 a(n) is the least natural k which is a multiple of prime(n) such that for some m >= 0, phi(k) = rad(k)^m, where phi(k) = A000010(k) and rad(k) = A007947(k).

Table of values

List of values