A179658 - cp's OEIS frontend

A179658 Minimal odd k such that k2^n-1 and k2^(n+1)-1 are Sophie Germain primes.

n	a(n)
1	3
2	1
3	3
4	15
5	45
6	3
7	99
8	45
9	51
10	141
11	153
12	177
13	411
14	45
15	45
16	267
17	237
18	75
19	75
20	207
21	111
22	111
23	123
24	159
25	57
26	375
27	1419
28	45
29	291
30	321
31	489
32	585
33	525
34	1623
35	579
36	45
37	27
38	1293
39	1059
40	255
41	2265
42	33
43	465
44	165
45	405
46	315
47	315
48	117
49	411
50	1725
51	2343
52	2397
53	465
54	315
55	1443

[3, 1, 3, 15, 45, 3, 99, 45, 51, 141, 153, 177, 411, 45, 45, 267, 237, 75, 75, 207, 111, 111, 123, 159, 57, 375, 1419, 45, 291, 321, 489, 585, 525, 1623, 579, 45, 27, 1293, 1059, 255, 2265, 33, 465, 165, 405, 315, 315, 117, 411, 1725, 2343, 2397, 465, 315, 1443]

cp's OEIS Frontend

A179658 Minimal odd k such that k2^n-1 and k2^(n+1)-1 are Sophie Germain primes.

Table of values

List of values

cp's OEIS Frontend

A179658 Minimal odd k such that k*2^n-1 and k*2^(n+1)-1 are Sophie Germain primes.

Table of values

List of values

A179658 Minimal odd k such that k2^n-1 and k2^(n+1)-1 are Sophie Germain primes.