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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.

A263046 Smallest number k>2 such that k*2^n + 1 is a prime number.

Table of values

n a(n)
0 4
1 3
2 3
3 5
4 6
5 3
6 3
7 5
8 3
9 15
10 12
11 6
12 3
13 5
14 4
15 5
16 12
17 6
18 3
19 11
20 7
21 11
22 25
23 20
24 10
25 5
26 7
27 15
28 12
29 6
30 3
31 35
32 18
33 9
34 12
35 6
36 3
37 15
38 10
39 5
40 6
41 3
42 9
43 9
44 15
45 35
46 19
47 27
48 15
49 14
50 7
51 14
52 7
53 20
54 10
55 5
56 27
57 29
58 54
59 27
60 31
61 36
62 18
63 9
64 12
65 6
66 3
67 9
68 31
69 23
70 39
71 39
72 40
73 20
74 10
75 5
76 58

List of values

[4, 3, 3, 5, 6, 3, 3, 5, 3, 15, 12, 6, 3, 5, 4, 5, 12, 6, 3, 11, 7, 11, 25, 20, 10, 5, 7, 15, 12, 6, 3, 35, 18, 9, 12, 6, 3, 15, 10, 5, 6, 3, 9, 9, 15, 35, 19, 27, 15, 14, 7, 14, 7, 20, 10, 5, 27, 29, 54, 27, 31, 36, 18, 9, 12, 6, 3, 9, 31, 23, 39, 39, 40, 20, 10, 5, 58]

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