A176045 - cp's OEIS frontend

A176045 Numbers n such that n-1 and 2*n-1 are both prime.

n	a(n)
1	3
2	4
3	6
4	12
5	24
6	30
7	42
8	54
9	84
10	90
11	114
12	132
13	174
14	180
15	192
16	234
17	240
18	252
19	282
20	294
21	360
22	420
23	432
24	444
25	492
26	510
27	594
28	642
29	654
30	660
31	684
32	720
33	744
34	762
35	810
36	912
37	954
38	1014
39	1020
40	1032
41	1050
42	1104
43	1224
44	1230
45	1290
46	1410
47	1440
48	1452
49	1482
50	1500
51	1512
52	1560

[3, 4, 6, 12, 24, 30, 42, 54, 84, 90, 114, 132, 174, 180, 192, 234, 240, 252, 282, 294, 360, 420, 432, 444, 492, 510, 594, 642, 654, 660, 684, 720, 744, 762, 810, 912, 954, 1014, 1020, 1032, 1050, 1104, 1224, 1230, 1290, 1410, 1440, 1452, 1482, 1500, 1512, 1560]

cp's OEIS Frontend

A176045 Numbers n such that n-1 and 2*n-1 are both prime.

Table of values

List of values