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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.

A196697 Number of primes of the form of 2^n +- 2^k +- 1 with 0 <= k < n.

Table of values

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

List of values

[1, 4, 5, 6, 7, 9, 7, 11, 10, 12, 7, 12, 8, 12, 9, 14, 11, 19, 13, 22, 7, 9, 11, 16, 4, 8, 9, 7, 12, 18, 14, 15, 11, 10, 10, 18, 8, 12, 11, 18, 12, 23, 5, 12, 13, 16, 13, 22, 8, 9, 16, 13, 9, 13, 14, 11, 11, 10, 10, 20, 15, 10, 10, 13, 9, 22, 11, 10, 10, 12]

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

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