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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.

A240240 Consider primitive Heronian triangles with integer area and with sides {m, m+1, c}, where c > m+1. The sequence gives the possible values of m.

Table of values

n a(n)
1 3
2 9
3 13
4 19
5 20
6 33
7 51
8 65
9 73
10 99
11 119
12 129
13 163
14 170
15 174
16 193
17 201
18 203
19 220
20 243
21 260
22 269
23 287
24 289
25 339
26 362
27 377
28 393
29 450
30 451
31 513
32 532
33 559
34 579
35 615
36 649
37 696
38 702
39 714
40 723
41 740
42 771
43 801
44 883
45 909
46 940
47 969
48 975
49 1059
50 1112
51 1153
52 1155
53 1156
54 1164
55 1251
56 1299
57 1325
58 1332
59 1353
60 1424
61 1455
62 1459
63 1569
64 1605
65 1615
66 1683
67 1690
68 1716
69 1801
70 1869
71 1919
72 1923

List of values

[3, 9, 13, 19, 20, 33, 51, 65, 73, 99, 119, 129, 163, 170, 174, 193, 201, 203, 220, 243, 260, 269, 287, 289, 339, 362, 377, 393, 450, 451, 513, 532, 559, 579, 615, 649, 696, 702, 714, 723, 740, 771, 801, 883, 909, 940, 969, 975, 1059, 1112, 1153, 1155, 1156, 1164, 1251, 1299, 1325, 1332, 1353, 1424, 1455, 1459, 1569, 1605, 1615, 1683, 1690, 1716, 1801, 1869, 1919, 1923]