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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.

A239246 Number of primitive Heronian triangles with n as greatest side length.

Table of values

n a(n)
1 0
2 0
3 0
4 0
5 1
6 1
7 0
8 1
9 0
10 0
11 0
12 0
13 2
14 0
15 2
16 0
17 3
18 0
19 0
20 2
21 2
22 0
23 0
24 1
25 3
26 2
27 0
28 1
29 2
30 3
31 0
32 0
33 0
34 0
35 2
36 1
37 5
38 0
39 4
40 3
41 4
42 1
43 0
44 2
45 1
46 0
47 0
48 2
49 0
50 2
51 4
52 6
53 4
54 0
55 2
56 2
57 0
58 2
59 0
60 1
61 3
62 0
63 1
64 0
65 8
66 2
67 0
68 5
69 1
70 2
71 0
72 0
73 6
74 2
75 7
76 0
77 3
78 0
79 0
80 3
81 0
82 2
83 0
84 0
85 9

List of values

[0, 0, 0, 0, 1, 1, 0, 1, 0, 0, 0, 0, 2, 0, 2, 0, 3, 0, 0, 2, 2, 0, 0, 1, 3, 2, 0, 1, 2, 3, 0, 0, 0, 0, 2, 1, 5, 0, 4, 3, 4, 1, 0, 2, 1, 0, 0, 2, 0, 2, 4, 6, 4, 0, 2, 2, 0, 2, 0, 1, 3, 0, 1, 0, 8, 2, 0, 5, 1, 2, 0, 0, 6, 2, 7, 0, 3, 0, 0, 3, 0, 2, 0, 0, 9]