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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.

A371969 Perimeters of triangles with integer sides, which can be decomposed into 3 triangles that have a common vertex strictly inside the surrounding triangle and also integer sides.

Table of values

n a(n)
1 49
2 50
3 54
4 64
5 75
6 78
7 80
8 88
9 90
10 91
11 98
12 100
13 104
14 108
15 112
16 117
17 120
18 121
19 125
20 126
21 128
22 133
23 136
24 140
25 144
26 147
27 150
28 156
29 160
30 162
31 165
32 168
33 169
34 170
35 175
36 176
37 180
38 182
39 184
40 188
41 192
42 195
43 196
44 198
45 200
46 203
47 208
48 210
49 216
50 220
51 224
52 225
53 231
54 234
55 238
56 240

List of values

[49, 50, 54, 64, 75, 78, 80, 88, 90, 91, 98, 100, 104, 108, 112, 117, 120, 121, 125, 126, 128, 133, 136, 140, 144, 147, 150, 156, 160, 162, 165, 168, 169, 170, 175, 176, 180, 182, 184, 188, 192, 195, 196, 198, 200, 203, 208, 210, 216, 220, 224, 225, 231, 234, 238, 240]

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

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