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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.

A068967 Numbers that define integer Heronian triangles [a(n), prime(a(n)), A068968(n)] with area A068969(n).

Table of values

n a(n)
1 3
2 12
3 25
4 30
5 37
6 51
7 60
8 65
9 65
10 100
11 116
12 260
13 273
14 761
15 761
16 825
17 884
18 1092
19 1476
20 1695
21 1695
22 1752
23 2415
24 3048
25 3552
26 4045
27 4134
28 4264
29 5429
30 6357
31 7267
32 9316
33 14027
34 16095
35 18850
36 21576
37 29925
38 30261
39 38164
40 40562
41 45982
42 45982
43 51805
44 51805
45 82000
46 82000

List of values

[3, 12, 25, 30, 37, 51, 60, 65, 65, 100, 116, 260, 273, 761, 761, 825, 884, 1092, 1476, 1695, 1695, 1752, 2415, 3048, 3552, 4045, 4134, 4264, 5429, 6357, 7267, 9316, 14027, 16095, 18850, 21576, 29925, 30261, 38164, 40562, 45982, 45982, 51805, 51805, 82000, 82000]