A002236 - cp's OEIS frontend

A002236 Numbers k such that 9*2^k - 1 is prime.

n	a(n)
1	1
2	3
3	7
4	13
5	15
6	21
7	43
8	63
9	99
10	109
11	159
12	211
13	309
14	343
15	415
16	469
17	781
18	871
19	939
20	1551
21	3115
22	3349
23	5589
24	5815
25	5893
26	7939
27	8007
28	11547
29	12495
30	22555
31	23647
32	35647
33	83415
34	103059
35	184999
36	275859
37	384243
38	484975
39	503893
40	828709
41	1010277
42	1419855
43	1481821

[1, 3, 7, 13, 15, 21, 43, 63, 99, 109, 159, 211, 309, 343, 415, 469, 781, 871, 939, 1551, 3115, 3349, 5589, 5815, 5893, 7939, 8007, 11547, 12495, 22555, 23647, 35647, 83415, 103059, 184999, 275859, 384243, 484975, 503893, 828709, 1010277, 1419855, 1481821]

cp's OEIS Frontend

A002236 Numbers k such that 9*2^k - 1 is prime.

Table of values

List of values