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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.

A344896 Number of polygon edges formed by infinite lines when connecting all vertices and all points that divide the sides of an equilateral triangle into n equal parts.

Table of values

n a(n)
1 3
2 21
3 186
4 705
5 2196
6 5046
7 10212
8 19149
9 31524
10 50049
11 77100
12 114633
13 159453
14 225978
15 298833
16 390069
17 508137
18 663426
19 824868
20 1040727
21 1258833
22 1532565
23 1859331
24 2254938
25 2628309
26 3130227
27 3664920
28 4261503
29 4917939
30 5742696
31 6503331
32 7511280
33 8507322
34 9658806
35 10855989
36 12237066

List of values

[3, 21, 186, 705, 2196, 5046, 10212, 19149, 31524, 50049, 77100, 114633, 159453, 225978, 298833, 390069, 508137, 663426, 824868, 1040727, 1258833, 1532565, 1859331, 2254938, 2628309, 3130227, 3664920, 4261503, 4917939, 5742696, 6503331, 7511280, 8507322, 9658806, 10855989, 12237066]

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

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