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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.

A229859 Consider all 120-degree triangles with sides A < B < C. The sequence gives the values of B.

Table of values

n a(n)
1 5
2 8
3 10
4 15
5 16
6 20
7 24
8 25
9 30
10 32
11 33
12 35
13 39
14 40
15 45
16 48
17 50
18 51
19 55
20 56
21 57
22 60
23 63
24 64
25 65
26 66
27 70
28 72
29 75
30 77
31 78
32 80
33 85
34 88
35 90
36 91
37 95
38 96
39 99
40 100
41 102
42 104
43 105
44 110
45 112
46 114
47 115
48 117
49 120
50 125
51 126
52 128
53 130
54 132
55 135
56 136
57 140
58 143
59 144
60 145

List of values

[5, 8, 10, 15, 16, 20, 24, 25, 30, 32, 33, 35, 39, 40, 45, 48, 50, 51, 55, 56, 57, 60, 63, 64, 65, 66, 70, 72, 75, 77, 78, 80, 85, 88, 90, 91, 95, 96, 99, 100, 102, 104, 105, 110, 112, 114, 115, 117, 120, 125, 126, 128, 130, 132, 135, 136, 140, 143, 144, 145]

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

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