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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.

A365049 a(n) is the number of distinct parallelograms with integer sides and area n, and where at least one height is an integer.

Table of values

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

List of values

[1, 1, 2, 3, 2, 4, 2, 5, 5, 4, 2, 10, 2, 4, 8, 9, 2, 9, 2, 10, 8, 4, 2, 20, 5, 4, 8, 10, 2, 16, 2, 13, 8, 4, 8, 23, 2, 4, 8, 20, 2, 16, 2, 10, 18, 4, 2, 34, 5, 9, 8, 10, 2, 16, 8, 20, 8, 4, 2, 40, 2, 4, 18, 19, 8, 16, 2, 10, 8, 16, 2, 45, 2, 4, 18, 10, 8, 16, 2, 34, 13]

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