A135434 - cp's OEIS frontend

A135434 a(n) is the smallest odd number that makes a(n)*2^N(n)-1 prime, where N(n) is the n-th Mersenne number that makes 2^N(n)-1 prime.

n	a(n)
1	3
2	3
3	7
4	3
5	9
6	7
7	51
8	15
9	69
10	19
11	25
12	103
13	1905
14	273
15	139
16	13
17	4027
18	3619
19	2187
20	3211
21	6621
22	1897
23	17461
24	2511
25	90579
26	30189
27	805
28	86539
29	30091
30	317917
31	198681
32	755061
33	1283911
34	26869
35	1564347
36	4348099
37	383731
38	6020095

[3, 3, 7, 3, 9, 7, 51, 15, 69, 19, 25, 103, 1905, 273, 139, 13, 4027, 3619, 2187, 3211, 6621, 1897, 17461, 2511, 90579, 30189, 805, 86539, 30091, 317917, 198681, 755061, 1283911, 26869, 1564347, 4348099, 383731, 6020095]

cp's OEIS Frontend

A135434 a(n) is the smallest odd number that makes a(n)*2^N(n)-1 prime, where N(n) is the n-th Mersenne number that makes 2^N(n)-1 prime.

Table of values

List of values