A107655 - cp's OEIS frontend

A107655 a(n) is the smallest number m greater than 1 such that phi(m) = d(m)^n, where d(m) is number of positive divisors of m; if there is no such m, a(n)=1.

n	a(n)
1	3
2	5
3	85
4	17
5	1285
6	4369
7	559876
8	257
9	327685
10	1114129
11	1114521441417
12	16843009
13	160490068541289
14	1925878801139721
15	23110536763219977
16	65537
17	3327917287071744009
18	39934999967815157769
19	479219999336720898057
20	5750639996603165650953
21	69007679885506346588169
22	828092158571811231498249
23	9937105900443065378930697

[3, 5, 85, 17, 1285, 4369, 559876, 257, 327685, 1114129, 1114521441417, 16843009, 160490068541289, 1925878801139721, 23110536763219977, 65537, 3327917287071744009, 39934999967815157769, 479219999336720898057, 5750639996603165650953, 69007679885506346588169, 828092158571811231498249, 9937105900443065378930697]

cp's OEIS Frontend

A107655 a(n) is the smallest number m greater than 1 such that phi(m) = d(m)^n, where d(m) is number of positive divisors of m; if there is no such m, a(n)=1.

Table of values

List of values