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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.

A095014 Number of 8k+-3 primes (A003629) in range [2^n,2^(n+1)].

Table of values

n a(n)
1 1
2 1
3 2
4 2
5 5
6 5
7 13
8 21
9 40
10 70
11 129
12 231
13 434
14 819
15 1505
16 2884
17 5358
18 10198
19 19303
20 36847
21 70173
22 134233
23 256831
24 492856
25 947182
26 1822968
27 3513746
28 6781112
29 13104524
30 25348436
31 49092129
32 95167472
33 184663536
34 358631365
35 697100084
36 1356061232
37 2639871771
38 5142831980

List of values

[1, 1, 2, 2, 5, 5, 13, 21, 40, 70, 129, 231, 434, 819, 1505, 2884, 5358, 10198, 19303, 36847, 70173, 134233, 256831, 492856, 947182, 1822968, 3513746, 6781112, 13104524, 25348436, 49092129, 95167472, 184663536, 358631365, 697100084, 1356061232, 2639871771, 5142831980]

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

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