cp's OEIS Frontend

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.

A229838 Consider all primitive 60-degree triangles with sides A < B < C. The sequence gives the values of A.

Table of values

n a(n)
1 3
2 5
3 7
4 8
5 9
6 11
7 13
8 15
9 16
10 17
11 19
12 21
13 23
14 24
15 25
16 27
17 29
18 31
19 32
20 33
21 35
22 37
23 39
24 40
25 41
26 43
27 45
28 47
29 48
30 49
31 51
32 53
33 55
34 56
35 57
36 59
37 61
38 63
39 64
40 65
41 67
42 69
43 71
44 72
45 73
46 75
47 77
48 79
49 80
50 81
51 83
52 85
53 87
54 88
55 89
56 91
57 93
58 95
59 96
60 97
61 99
62 101
63 103
64 104
65 105

List of values

[3, 5, 7, 8, 9, 11, 13, 15, 16, 17, 19, 21, 23, 24, 25, 27, 29, 31, 32, 33, 35, 37, 39, 40, 41, 43, 45, 47, 48, 49, 51, 53, 55, 56, 57, 59, 61, 63, 64, 65, 67, 69, 71, 72, 73, 75, 77, 79, 80, 81, 83, 85, 87, 88, 89, 91, 93, 95, 96, 97, 99, 101, 103, 104, 105]

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

Content is available under The OEIS End-User License Agreement.