A133832 - cp's OEIS frontend

A133832 Least number k > n such that the binary trinomial 1 + 2^n + 2^k is prime, or 0 if there is no such k.

n	a(n)
1	2
2	3
3	5
4	13
5	6
6	7
7	9
8	9
9	18
10	19
11	14
12	13
13	15
14	17
15	17
16	81
17	20
18	19
19	30
20	33
21	26
22	27
23	38
24	81
25	27
26	35
27	31
28	33
29	35
30	31
31	42
32	458465
33	36
34	45
35	47
36	37
37	67
38	53
39	41
40	57
41	42
42	45
43	46
44	69
45	54
46	57
47	53
48	1009
49	100
50	119
51	55
52	73
53	83
54	67
55	57
56	1265
57	74
58	69
59	66
60	113
61	75
62	101
63	66
64	2241
65	68
66	67
67	70

[2, 3, 5, 13, 6, 7, 9, 9, 18, 19, 14, 13, 15, 17, 17, 81, 20, 19, 30, 33, 26, 27, 38, 81, 27, 35, 31, 33, 35, 31, 42, 458465, 36, 45, 47, 37, 67, 53, 41, 57, 42, 45, 46, 69, 54, 57, 53, 1009, 100, 119, 55, 73, 83, 67, 57, 1265, 74, 69, 66, 113, 75, 101, 66, 2241, 68, 67, 70]

cp's OEIS Frontend

A133832 Least number k > n such that the binary trinomial 1 + 2^n + 2^k is prime, or 0 if there is no such k.

Table of values

List of values