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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.

A371664 a(n) is the number of arithmetic progressions that can be formed from all the interior angles (all integers when measured in degrees) of a regular polygon with A371663(n) sides.

Table of values

n a(n)
1 60
2 30
3 54
4 24
5 20
6 35
7 16
8 14
9 23
10 10
11 10
12 9
13 8
14 6
15 5
16 5
17 8
18 4
19 3
20 3
21 2
22 2
23 2
24 1
25 1
26 1
27 1

List of values

[60, 30, 54, 24, 20, 35, 16, 14, 23, 10, 10, 9, 8, 6, 5, 5, 8, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1]

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

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