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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.

A127651 Triangle T(n,k) = n*k if k|n, 0 otherwise; 1<=k<=n.

Table of values

n a(n)
1 1
2 2
3 4
4 3
5 0
6 9
7 4
8 8
9 0
10 16
11 5
12 0
13 0
14 0
15 25
16 6
17 12
18 18
19 0
20 0
21 36
22 7
23 0
24 0
25 0
26 0
27 0
28 49
29 8
30 16
31 0
32 32
33 0
34 0
35 0
36 64
37 9
38 0
39 27
40 0
41 0
42 0
43 0
44 0
45 81
46 10
47 20
48 0
49 0
50 50
51 0
52 0
53 0
54 0
55 100
56 11
57 0
58 0
59 0
60 0
61 0
62 0
63 0
64 0
65 0
66 121
67 12
68 24
69 36
70 48
71 0
72 72
73 0
74 0
75 0
76 0
77 0
78 144

List of values

[1, 2, 4, 3, 0, 9, 4, 8, 0, 16, 5, 0, 0, 0, 25, 6, 12, 18, 0, 0, 36, 7, 0, 0, 0, 0, 0, 49, 8, 16, 0, 32, 0, 0, 0, 64, 9, 0, 27, 0, 0, 0, 0, 0, 81, 10, 20, 0, 0, 50, 0, 0, 0, 0, 100, 11, 0, 0, 0, 0, 0, 0, 0, 0, 0, 121, 12, 24, 36, 48, 0, 72, 0, 0, 0, 0, 0, 144]

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