A205322 - cp's OEIS frontend

A205322 Smallest k>=0 such that (2^n-k)2^n-1 and (2^n-k)2^n+1 are a twin prime pair; or -1 if no such k exists.

n	a(n)
1	0
2	1
3	-1
4	1
5	26
6	22
7	8
8	28
9	47
10	16
11	14
12	19
13	17
14	316
15	8
16	133
17	116
18	166
19	77
20	364
21	197
22	49
23	647
24	1594
25	848
26	109
27	869
28	169
29	773
30	166
31	1274
32	466
33	512
34	694
35	644
36	733
37	401
38	1636
39	662
40	184
41	71
42	3106
43	1157
44	346
45	332
46	2194
47	6179
48	7999
49	6023
50	6784
51	5612
52	1108
53	1001
54	649
55	197

[0, 1, -1, 1, 26, 22, 8, 28, 47, 16, 14, 19, 17, 316, 8, 133, 116, 166, 77, 364, 197, 49, 647, 1594, 848, 109, 869, 169, 773, 166, 1274, 466, 512, 694, 644, 733, 401, 1636, 662, 184, 71, 3106, 1157, 346, 332, 2194, 6179, 7999, 6023, 6784, 5612, 1108, 1001, 649, 197]

cp's OEIS Frontend

A205322 Smallest k>=0 such that (2^n-k)2^n-1 and (2^n-k)2^n+1 are a twin prime pair; or -1 if no such k exists.

Table of values

List of values

cp's OEIS Frontend

A205322 Smallest k>=0 such that (2^n-k)*2^n-1 and (2^n-k)*2^n+1 are a twin prime pair; or -1 if no such k exists.

Table of values

List of values

A205322 Smallest k>=0 such that (2^n-k)2^n-1 and (2^n-k)2^n+1 are a twin prime pair; or -1 if no such k exists.