A061157 - cp's OEIS frontend

A061157 Numbers k such that k*2^m-1 is prime for exactly one exponent m in the range 0<=m<=k.

n	a(n)
1	11
2	22
3	37
4	74
5	109
6	151
7	247
8	253
9	337
10	382
11	403
12	506
13	509
14	547
15	674
16	739
17	764
18	779
19	806
20	1325
21	1478
22	1528
23	1558
24	1589
25	1597
26	1612
27	1871
28	1987
29	2263
30	2279
31	2317
32	2759
33	2797
34	3056
35	3116
36	3194
37	3329
38	3341
39	3719
40	3742
41	3761
42	3821
43	4001
44	4412
45	4526
46	4558
47	4559
48	4603
49	4736
50	4813

[11, 22, 37, 74, 109, 151, 247, 253, 337, 382, 403, 506, 509, 547, 674, 739, 764, 779, 806, 1325, 1478, 1528, 1558, 1589, 1597, 1612, 1871, 1987, 2263, 2279, 2317, 2759, 2797, 3056, 3116, 3194, 3329, 3341, 3719, 3742, 3761, 3821, 4001, 4412, 4526, 4558, 4559, 4603, 4736, 4813]

cp's OEIS Frontend

A061157 Numbers k such that k*2^m-1 is prime for exactly one exponent m in the range 0<=m<=k.

Table of values

List of values