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.

A014198 Number of integer solutions to x^2 + y^2 <= n excluding (0,0).

Table of values

n a(n)
0 0
1 4
2 8
3 8
4 12
5 20
6 20
7 20
8 24
9 28
10 36
11 36
12 36
13 44
14 44
15 44
16 48
17 56
18 60
19 60
20 68
21 68
22 68
23 68
24 68
25 80
26 88
27 88
28 88
29 96
30 96
31 96
32 100
33 100
34 108
35 108
36 112
37 120
38 120
39 120
40 128
41 136
42 136
43 136
44 136
45 144
46 144
47 144
48 144
49 148
50 160
51 160
52 168
53 176
54 176
55 176
56 176
57 176
58 184
59 184

List of values

[0, 4, 8, 8, 12, 20, 20, 20, 24, 28, 36, 36, 36, 44, 44, 44, 48, 56, 60, 60, 68, 68, 68, 68, 68, 80, 88, 88, 88, 96, 96, 96, 100, 100, 108, 108, 112, 120, 120, 120, 128, 136, 136, 136, 136, 144, 144, 144, 144, 148, 160, 160, 168, 176, 176, 176, 176, 176, 184, 184]