A279094 - cp's OEIS frontend

A279094 Smallest k such that sigma(k^n) is prime.

n	a(n)
1	2
2	2
3	4
4	2
5	25
6	2
7	59049
8	4
9	4
10	5
11	256
12	2
13	282475249
14	243
15	4
16	2
17	729
18	2
19	1174562876521148458974062689
20	8
21	64
22	16
23	25
24	1331
25	594823321
26	16807
27	38950081
28	151
29	361
30	2
31	470541197898347534873984161
32	19902511
33	241081
34	27
35	9
36	61
37	625
38	34271896307633
39	73441
40	53
41	1681

[2, 2, 4, 2, 25, 2, 59049, 4, 4, 5, 256, 2, 282475249, 243, 4, 2, 729, 2, 1174562876521148458974062689, 8, 64, 16, 25, 1331, 594823321, 16807, 38950081, 151, 361, 2, 470541197898347534873984161, 19902511, 241081, 27, 9, 61, 625, 34271896307633, 73441, 53, 1681]

cp's OEIS Frontend

A279094 Smallest k such that sigma(k^n) is prime.

Table of values

List of values