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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A057673 Smallest prime p such that |2^n - p| is a prime.

Table of values

n a(n)
0 3
1 5
2 2
3 3
4 3
5 3
6 3
7 19
8 5
9 3
10 3
11 19
12 3
13 13
14 3
15 19
16 17
17 13
18 5
19 19
20 3
21 19
22 3
23 37
24 3
25 61
26 5
27 79
28 89
29 3
30 41
31 19
32 5
33 79
34 41
35 31
36 5
37 31
38 107
39 7
40 167
41 31
42 11
43 67
44 17
45 139
46 167
47 127
48 59
49 139
50 71
51 139
52 47
53 379
54 53
55 67
56 5
57 13
58 137
59 607
60 107
61 31
62 167
63 409
64 59
65 79
66 5
67 19
68 23
69 19
70 71
71 577
72 107

List of values

[3, 5, 2, 3, 3, 3, 3, 19, 5, 3, 3, 19, 3, 13, 3, 19, 17, 13, 5, 19, 3, 19, 3, 37, 3, 61, 5, 79, 89, 3, 41, 19, 5, 79, 41, 31, 5, 31, 107, 7, 167, 31, 11, 67, 17, 139, 167, 127, 59, 139, 71, 139, 47, 379, 53, 67, 5, 13, 137, 607, 107, 31, 167, 409, 59, 79, 5, 19, 23, 19, 71, 577, 107]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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