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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.

A027420 Triangle T00, T10, T01, T20, T11, T02, etc., where Tmn = number of distinct products ij with min(m,n) <= i,j <= max(m,n).

Table of values

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

List of values

[1, 2, 2, 4, 1, 4, 7, 3, 3, 7, 10, 6, 1, 6, 10, 15, 9, 3, 3, 9, 15, 19, 14, 6, 1, 6, 14, 19, 26, 18, 10, 3, 3, 10, 18, 26, 31, 25, 14, 6, 1, 6, 14, 25, 31, 37, 30, 20, 10, 3, 3, 10, 20, 30, 37, 43, 36, 25, 15, 6, 1, 6, 15, 25, 36, 43, 54, 42, 31, 20, 10, 3, 3, 10, 20, 31, 42, 54]

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