A263581 - cp's OEIS frontend

A263581 Prime powers (p^k, p prime, k >= 1) such that k*p^k - 1 is also a power of a prime.

n	a(n)
1	2
2	3
3	4
4	5
5	8
6	9
7	17
8	25
9	49
10	64
11	121
12	169
13	257
14	289
15	729
16	841
17	1681
18	1849
19	3481
20	5329
21	11881
22	12769
23	16129
24	18769
25	24649
26	32041
27	32761
28	38809
29	39601
30	44521
31	59049
32	63001
33	65537
34	69169
35	76729
36	85849
37	96721
38	124609
39	134689
40	143641
41	167281
42	175561
43	187489

[2, 3, 4, 5, 8, 9, 17, 25, 49, 64, 121, 169, 257, 289, 729, 841, 1681, 1849, 3481, 5329, 11881, 12769, 16129, 18769, 24649, 32041, 32761, 38809, 39601, 44521, 59049, 63001, 65537, 69169, 76729, 85849, 96721, 124609, 134689, 143641, 167281, 175561, 187489]

cp's OEIS Frontend

A263581 Prime powers (p^k, p prime, k >= 1) such that k*p^k - 1 is also a power of a prime.

Table of values

List of values