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.

A208855 Array of even catheti of primitive Pythagorean triangles when read by SW-NE diagonals.

Table of values

n a(n)
1 4
2 12
3 8
4 20
5 24
6 12
7 28
8 40
9 0
10 16
11 36
12 56
13 60
14 48
15 20
16 44
17 72
18 84
19 80
20 60
21 24
22 52
23 88
24 0
25 112
26 0
27 0
28 28
29 60
30 104
31 132
32 144
33 140
34 120
35 84
36 32
37 68
38 120
39 156
40 176
41 180
42 168
43 140
44 96
45 36
46 76
47 136
48 0
49 208
50 220
51 0
52 0
53 160
54 0
55 40

List of values

[4, 12, 8, 20, 24, 12, 28, 40, 0, 16, 36, 56, 60, 48, 20, 44, 72, 84, 80, 60, 24, 52, 88, 0, 112, 0, 0, 28, 60, 104, 132, 144, 140, 120, 84, 32, 68, 120, 156, 176, 180, 168, 140, 96, 36, 76, 136, 0, 208, 220, 0, 0, 160, 0, 40]