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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.

A335803 Irregular table read by rows: n-sect the angles of a decagon. Then T(n,k) = number of k-sided polygons in that figure for k >= 3.

Table of values

n a(n)
1 0
2 0
3 0
4 0
5 0
6 0
7 0
8 1
9 10
10 30
11 120
12 0
13 0
14 0
15 0
16 0
17 0
18 0
19 0
20 0
21 0
22 0
23 0
24 0
25 0
26 0
27 1
28 50
29 150
30 240
31 60
32 20
33 0
34 0
35 0
36 0
37 0
38 0
39 0
40 0
41 0
42 0
43 0
44 0
45 0
46 1
47 250
48 140
49 40
50 10
51 300
52 510
53 130
54 30
55 0
56 10
57 0
58 0
59 0
60 0
61 0
62 0
63 0
64 0
65 0
66 0
67 0
68 1
69 120
70 90
71 10

List of values

[0, 0, 0, 0, 0, 0, 0, 1, 10, 30, 120, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 50, 150, 240, 60, 20, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 250, 140, 40, 10, 300, 510, 130, 30, 0, 10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 120, 90, 10]

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