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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.

A368522 Triangular array T, read by rows: T(n,k) = number of sums |x-y| + |y-z| - |x-z| = 2n-2-k, where x,y,z are in {1,2,...,n}.

Table of values

n a(n)
1 1
2 2
3 6
4 2
5 8
6 17
7 2
8 8
9 18
10 36
11 2
12 8
13 18
14 32
15 65
16 2
17 8
18 18
19 32
20 50
21 106
22 2
23 8
24 18
25 32
26 50
27 72
28 161
29 2
30 8
31 18
32 32
33 50
34 72
35 98
36 232
37 2
38 8
39 18
40 32
41 50
42 72
43 98
44 128
45 321
46 2
47 8
48 18
49 32
50 50
51 72
52 98
53 128
54 162
55 430
56 2
57 8
58 18
59 32
60 50
61 72
62 98
63 128
64 162
65 200
66 561
67 2

List of values

[1, 2, 6, 2, 8, 17, 2, 8, 18, 36, 2, 8, 18, 32, 65, 2, 8, 18, 32, 50, 106, 2, 8, 18, 32, 50, 72, 161, 2, 8, 18, 32, 50, 72, 98, 232, 2, 8, 18, 32, 50, 72, 98, 128, 321, 2, 8, 18, 32, 50, 72, 98, 128, 162, 430, 2, 8, 18, 32, 50, 72, 98, 128, 162, 200, 561, 2]

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