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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.

A067156 Number of regions in regular n-gon which are 9-gons.

Table of values

n a(n)
9 1
10 0
11 0
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 0
28 0
29 0
30 0
31 0
32 0
33 0
34 0
35 35
36 0
37 0
38 0
39 0
40 0
41 123
42 0
43 0
44 88
45 45
46 0
47 0
48 0
49 0
50 0
51 51
52 0
53 0
54 0
55 165
56 0
57 114
58 0
59 118
60 120
61 61
62 124
63 0
64 192
65 195
66 66
67 67
68 272
69 138
70 0
71 568
72 360
73 146
74 222
75 600
76 0
77 231
78 156
79 237
80 800
81 567
82 410
83 664
84 84
85 255
86 344
87 174

List of values

[1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 35, 0, 0, 0, 0, 0, 123, 0, 0, 88, 45, 0, 0, 0, 0, 0, 51, 0, 0, 0, 165, 0, 114, 0, 118, 120, 61, 124, 0, 192, 195, 66, 67, 272, 138, 0, 568, 360, 146, 222, 600, 0, 231, 156, 237, 800, 567, 410, 664, 84, 255, 344, 174]

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