A095991 - cp's OEIS frontend

A095991 Numbers m such that f(k) * 2^m - 1 is prime, where f(j) = A070826(j) and k is the number of decimal digits of 2^m.

n	a(n)
1	2
2	3
3	4
4	6
5	14
6	17
7	18
8	23
9	33
10	43
11	45
12	53
13	60
14	70
15	114
16	141
17	162
18	178
19	387
20	657
21	787
22	951
23	1517
24	1882
25	1999
26	2423
27	2722
28	3635
29	3636
30	3893
31	5021
32	5631
33	7580
34	7674
35	8318
36	9479
37	19761

[2, 3, 4, 6, 14, 17, 18, 23, 33, 43, 45, 53, 60, 70, 114, 141, 162, 178, 387, 657, 787, 951, 1517, 1882, 1999, 2423, 2722, 3635, 3636, 3893, 5021, 5631, 7580, 7674, 8318, 9479, 19761]

cp's OEIS Frontend

A095991 Numbers m such that f(k) * 2^m - 1 is prime, where f(j) = A070826(j) and k is the number of decimal digits of 2^m.

Table of values

List of values