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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.

A371972 a(n) is the number of distinct areas of triangles with integer sides whose largest side is n.

Table of values

n a(n)
1 1
2 2
3 4
4 6
5 9
6 12
7 16
8 20
9 25
10 30
11 36
12 42
13 49
14 56
15 64
16 72
17 81
18 90
19 100
20 110
21 120
22 131
23 144
24 156
25 168
26 182
27 196
28 210
29 225
30 239
31 256
32 270
33 288
34 306
35 321
36 342
37 361
38 380
39 399
40 420
41 441
42 460
43 484
44 505
45 527
46 552
47 576
48 599
49 623
50 649
51 673
52 702
53 729
54 752
55 781
56 808
57 840
58 870
59 900

List of values

[1, 2, 4, 6, 9, 12, 16, 20, 25, 30, 36, 42, 49, 56, 64, 72, 81, 90, 100, 110, 120, 131, 144, 156, 168, 182, 196, 210, 225, 239, 256, 270, 288, 306, 321, 342, 361, 380, 399, 420, 441, 460, 484, 505, 527, 552, 576, 599, 623, 649, 673, 702, 729, 752, 781, 808, 840, 870, 900]

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

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