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.

A063468 Number of Pythagorean triples in the range [1..n], i.e., the number of integer solutions to x^2 + y^2 = z^2 with 1 <= x,y,z <= n.

Table of values

n a(n)
1 0
2 0
3 0
4 0
5 2
6 2
7 2
8 2
9 2
10 4
11 4
12 4
13 6
14 6
15 8
16 8
17 10
18 10
19 10
20 12
21 12
22 12
23 12
24 12
25 16
26 18
27 18
28 18
29 20
30 22
31 22
32 22
33 22
34 24
35 26
36 26
37 28
38 28
39 30
40 32
41 34
42 34
43 34
44 34
45 36
46 36
47 36
48 36
49 36
50 40
51 42
52 44
53 46
54 46
55 48
56 48
57 48
58 50
59 50
60 52
61 54
62 54
63 54
64 54
65 62
66 62
67 62
68 64
69 64
70 66
71 66
72 66
73 68
74 70

List of values

[0, 0, 0, 0, 2, 2, 2, 2, 2, 4, 4, 4, 6, 6, 8, 8, 10, 10, 10, 12, 12, 12, 12, 12, 16, 18, 18, 18, 20, 22, 22, 22, 22, 24, 26, 26, 28, 28, 30, 32, 34, 34, 34, 34, 36, 36, 36, 36, 36, 40, 42, 44, 46, 46, 48, 48, 48, 50, 50, 52, 54, 54, 54, 54, 62, 62, 62, 64, 64, 66, 66, 66, 68, 70]

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

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