A173888 - cp's OEIS frontend

A173888 Exactly one of (2^n-1)^2-2 and (2^n+1)^2-2 is prime.

n	a(n)
1	0
2	1
3	4
4	5
5	6
6	7
7	8
8	9
9	10
10	17
11	19
12	23
13	25
14	32
15	51
16	55
17	65
18	87
19	129
20	132
21	159
22	171
23	175
24	180
25	242
26	315
27	324
28	358
29	393
30	435
31	467
32	491
33	501
34	507
35	555
36	591
37	680
38	786
39	800
40	1070
41	1459
42	1650
43	1707
44	2813
45	2923
46	3281
47	4217
48	5153
49	6287
50	6365
51	6462
52	10088
53	10367
54	14289

[0, 1, 4, 5, 6, 7, 8, 9, 10, 17, 19, 23, 25, 32, 51, 55, 65, 87, 129, 132, 159, 171, 175, 180, 242, 315, 324, 358, 393, 435, 467, 491, 501, 507, 555, 591, 680, 786, 800, 1070, 1459, 1650, 1707, 2813, 2923, 3281, 4217, 5153, 6287, 6365, 6462, 10088, 10367, 14289]

cp's OEIS Frontend

A173888 Exactly one of (2^n-1)^2-2 and (2^n+1)^2-2 is prime.

Table of values

List of values