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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.

A027422 Triangle T00, T10, T11, T20, T21, T22, etc. where Tmn = number of distinct products ij with m-n<=i,j<=m.

Table of values

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

List of values

[1, 1, 2, 1, 3, 4, 1, 3, 6, 7, 1, 3, 6, 9, 10, 1, 3, 6, 10, 14, 15, 1, 3, 6, 10, 14, 18, 19, 1, 3, 6, 10, 15, 20, 25, 26, 1, 3, 6, 10, 15, 20, 25, 30, 31, 1, 3, 6, 10, 15, 20, 26, 31, 36, 37, 1, 3, 6, 10, 15, 21, 26, 32, 37, 42, 43, 1, 3, 6, 10, 15, 21, 28, 34, 41, 47, 53, 54, 1, 3, 6]

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