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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.

A024361 Number of primitive Pythagorean triangles with leg n.

Table of values

n a(n)
1 0
2 0
3 1
4 1
5 1
6 0
7 1
8 1
9 1
10 0
11 1
12 2
13 1
14 0
15 2
16 1
17 1
18 0
19 1
20 2
21 2
22 0
23 1
24 2
25 1
26 0
27 1
28 2
29 1
30 0
31 1
32 1
33 2
34 0
35 2
36 2
37 1
38 0
39 2
40 2
41 1
42 0
43 1
44 2
45 2
46 0
47 1
48 2
49 1
50 0
51 2
52 2
53 1
54 0
55 2
56 2
57 2
58 0
59 1
60 4
61 1
62 0
63 2
64 1
65 2
66 0
67 1
68 2
69 2
70 0
71 1
72 2
73 1
74 0
75 2
76 2
77 2
78 0
79 1
80 2
81 1
82 0
83 1
84 4
85 2
86 0
87 2
88 2
89 1
90 0
91 2
92 2
93 2
94 0
95 2
96 2
97 1
98 0
99 2
100 2
101 1
102 0
103 1
104 2
105 4

List of values

[0, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 2, 1, 0, 2, 1, 1, 0, 1, 2, 2, 0, 1, 2, 1, 0, 1, 2, 1, 0, 1, 1, 2, 0, 2, 2, 1, 0, 2, 2, 1, 0, 1, 2, 2, 0, 1, 2, 1, 0, 2, 2, 1, 0, 2, 2, 2, 0, 1, 4, 1, 0, 2, 1, 2, 0, 1, 2, 2, 0, 1, 2, 1, 0, 2, 2, 2, 0, 1, 2, 1, 0, 1, 4, 2, 0, 2, 2, 1, 0, 2, 2, 2, 0, 2, 2, 1, 0, 2, 2, 1, 0, 1, 2, 4]