A225098 - cp's OEIS frontend

A225098 Numbers k such that k^2 - 2 and 2*k^2 - 1 are both prime.

n	a(n)
1	2
2	3
3	7
4	13
5	15
6	21
7	43
8	49
9	63
10	69
11	127
12	155
13	183
14	211
15	231
16	237
17	259
18	265
19	273
20	293
21	301
22	323
23	335
24	391
25	435
26	441
27	447
28	489
29	505
30	573
31	595
32	671
33	713
34	715
35	743
36	757
37	797
38	811
39	951
40	959
41	973
42	979
43	987
44	993
45	1035
46	1147
47	1197
48	1287
49	1359
50	1393
51	1415
52	1429
53	1443
54	1491
55	1525
56	1597
57	1617
58	1653

[2, 3, 7, 13, 15, 21, 43, 49, 63, 69, 127, 155, 183, 211, 231, 237, 259, 265, 273, 293, 301, 323, 335, 391, 435, 441, 447, 489, 505, 573, 595, 671, 713, 715, 743, 757, 797, 811, 951, 959, 973, 979, 987, 993, 1035, 1147, 1197, 1287, 1359, 1393, 1415, 1429, 1443, 1491, 1525, 1597, 1617, 1653]

cp's OEIS Frontend

A225098 Numbers k such that k^2 - 2 and 2*k^2 - 1 are both prime.

Table of values

List of values