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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.

A336756 Perimeters in increasing order of primitive integer-sided triangles whose sides a < b < c are in arithmetic progression.

Table of values

n a(n)
1 9
2 12
3 15
4 15
5 18
6 21
7 21
8 21
9 24
10 24
11 27
12 27
13 27
14 30
15 30
16 33
17 33
18 33
19 33
20 33
21 36
22 36
23 39
24 39
25 39
26 39
27 39
28 39
29 42
30 42
31 42
32 45
33 45
34 45
35 45
36 48
37 48
38 48
39 48
40 51
41 51
42 51
43 51
44 51
45 51
46 51
47 51
48 54
49 54
50 54
51 57
52 57
53 57
54 57
55 57
56 57
57 57
58 57
59 57
60 60
61 60
62 60
63 60
64 63
65 63
66 63
67 63
68 63
69 63

List of values

[9, 12, 15, 15, 18, 21, 21, 21, 24, 24, 27, 27, 27, 30, 30, 33, 33, 33, 33, 33, 36, 36, 39, 39, 39, 39, 39, 39, 42, 42, 42, 45, 45, 45, 45, 48, 48, 48, 48, 51, 51, 51, 51, 51, 51, 51, 51, 54, 54, 54, 57, 57, 57, 57, 57, 57, 57, 57, 57, 60, 60, 60, 60, 63, 63, 63, 63, 63, 63]

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

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