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.

A296021 Number of primes of the form 4*k+1 <= 4*n+1.

Table of values

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

List of values

[0, 1, 1, 2, 3, 3, 3, 4, 4, 5, 6, 6, 6, 7, 7, 8, 8, 8, 9, 9, 9, 9, 10, 10, 11, 12, 12, 13, 14, 14, 14, 14, 14, 14, 15, 15, 15, 16, 16, 17, 17, 17, 17, 18, 18, 19, 19, 19, 20, 21, 21, 21, 21, 21, 21, 21, 21, 22, 23, 23, 24, 24, 24, 24, 25, 25, 25, 26, 26, 27, 28, 28]

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

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