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.

A097263 Primitive Pythagorean Quadruples a^2+b^2+c^2=d^2, 0 gcd(a,b,c,d)=1, sorted by d, then c, then b; sequence gives odd leg values.

Table of values

n a(n)
1 1
2 3
3 7
4 1
5 7
6 9
7 3
8 11
9 5
10 9
11 1
12 15
13 17
14 1
15 11
16 13
17 19
18 5
19 13
20 3
21 3
22 15
23 9
24 7
25 23
26 23
27 25
28 7
29 21
30 11
31 3
32 21
33 21
34 27
35 5
36 17
37 25
38 7
39 17
40 31
41 7
42 1
43 15
44 17
45 1
46 33
47 27
48 21
49 3
50 3
51 19
52 29
53 29
54 13
55 19
56 35
57 23
58 31
59 9
60 33
61 39
62 25
63 7
64 9
65 39
66 7
67 9
68 29
69 35
70 37
71 13
72 19
73 5
74 27
75 21
76 27
77 11
78 21
79 43
80 23

List of values

[1, 3, 7, 1, 7, 9, 3, 11, 5, 9, 1, 15, 17, 1, 11, 13, 19, 5, 13, 3, 3, 15, 9, 7, 23, 23, 25, 7, 21, 11, 3, 21, 21, 27, 5, 17, 25, 7, 17, 31, 7, 1, 15, 17, 1, 33, 27, 21, 3, 3, 19, 29, 29, 13, 19, 35, 23, 31, 9, 33, 39, 25, 7, 9, 39, 7, 9, 29, 35, 37, 13, 19, 5, 27, 21, 27, 11, 21, 43, 23]