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.

A304651 Number of coprime pairs (x,y) with x^2 + y^2 <= n.

Table of values

n a(n)
0 0
1 4
2 8
3 8
4 8
5 16
6 16
7 16
8 16
9 16
10 24
11 24
12 24
13 32
14 32
15 32
16 32
17 40
18 40
19 40
20 40
21 40
22 40
23 40
24 40
25 48
26 56
27 56
28 56
29 64
30 64
31 64
32 64
33 64
34 72
35 72
36 72
37 80
38 80
39 80
40 80
41 88
42 88
43 88
44 88
45 88
46 88
47 88
48 88
49 88
50 96
51 96
52 96
53 104
54 104
55 104
56 104
57 104
58 112
59 112
60 112
61 120
62 120
63 120
64 120

List of values

[0, 4, 8, 8, 8, 16, 16, 16, 16, 16, 24, 24, 24, 32, 32, 32, 32, 40, 40, 40, 40, 40, 40, 40, 40, 48, 56, 56, 56, 64, 64, 64, 64, 64, 72, 72, 72, 80, 80, 80, 80, 88, 88, 88, 88, 88, 88, 88, 88, 88, 96, 96, 96, 104, 104, 104, 104, 104, 112, 112, 112, 120, 120, 120, 120]

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

Content is available under The OEIS End-User License Agreement.