A076806 - cp's OEIS frontend

A076806 Minimal odd k such that k2^n-1 and k2^n+1 are twin primes.

n	a(n)
1	3
2	1
3	9
4	15
5	81
6	3
7	9
8	57
9	45
10	15
11	99
12	165
13	369
14	45
15	345
16	117
17	381
18	3
19	69
20	447
21	81
22	33
23	1179
24	243
25	765
26	375
27	81
28	387
29	45
30	345
31	681
32	585
33	375
34	267
35	741
36	213
37	429
38	3093
39	165
40	267
41	255
42	1095
43	9
44	147
45	849
46	405
47	1491
48	177
49	1941
50	927
51	1125
52	1197
53	2001
54	333
55	519

[3, 1, 9, 15, 81, 3, 9, 57, 45, 15, 99, 165, 369, 45, 345, 117, 381, 3, 69, 447, 81, 33, 1179, 243, 765, 375, 81, 387, 45, 345, 681, 585, 375, 267, 741, 213, 429, 3093, 165, 267, 255, 1095, 9, 147, 849, 405, 1491, 177, 1941, 927, 1125, 1197, 2001, 333, 519]

cp's OEIS Frontend

A076806 Minimal odd k such that k2^n-1 and k2^n+1 are twin primes.

Table of values

List of values

cp's OEIS Frontend

A076806 Minimal odd k such that k*2^n-1 and k*2^n+1 are twin primes.

Table of values

List of values

A076806 Minimal odd k such that k2^n-1 and k2^n+1 are twin primes.