cp's OEIS Frontend

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.

A191620 Least k such that (2^n-k)*2^n - 1 is a prime number.

Table of values

n a(n)
1 0
2 1
3 2
4 1
5 1
6 2
7 2
8 7
9 1
10 1
11 14
12 2
13 11
14 11
15 2
16 22
17 7
18 1
19 2
20 8
21 2
22 11
23 14
24 32
25 2
26 13
27 2
28 11
29 52
30 8
31 10
32 49
33 13
34 11
35 4
36 11
37 31
38 1
39 23
40 64
41 11
42 47
43 20
44 38
45 1
46 14
47 4
48 88
49 7
50 1
51 47
52 14
53 22
54 8
55 2
56 14
57 1
58 31
59 20
60 71
61 20
62 4
63 44
64 101
65 38
66 43
67 80
68 49
69 11
70 59
71 4
72 8

List of values

[0, 1, 2, 1, 1, 2, 2, 7, 1, 1, 14, 2, 11, 11, 2, 22, 7, 1, 2, 8, 2, 11, 14, 32, 2, 13, 2, 11, 52, 8, 10, 49, 13, 11, 4, 11, 31, 1, 23, 64, 11, 47, 20, 38, 1, 14, 4, 88, 7, 1, 47, 14, 22, 8, 2, 14, 1, 31, 20, 71, 20, 4, 44, 101, 38, 43, 80, 49, 11, 59, 4, 8]

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

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