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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.

A363882 Take 2 copies of Pascal's triangle. One copy has one inch between the terms of each row and the other copy has two inches between the terms of each row. Put one on top of the other so that the 1's at the very top of each copy coincide. Sequence is a triangle giving the differences between the overlapping terms.

Table of values

n a(n)
0 0
1 1
2 1
3 0
4 2
5 0
6 1
7 3
8 3
9 1
10 0
11 4
12 4
13 4
14 0
15 1
16 5
17 10
18 10
19 5
20 1
21 0
22 6
23 12
24 20
25 12
26 6
27 0
28 1
29 7
30 21
31 35
32 35
33 21
34 7
35 1
36 0
37 8
38 24
39 56
40 64
41 56
42 24
43 8
44 0
45 1
46 9
47 36
48 84
49 126
50 126
51 84
52 36
53 9
54 1
55 0
56 10
57 40
58 120
59 200
60 252
61 200
62 120
63 40
64 10
65 0
66 1
67 11
68 55
69 165
70 330
71 462
72 462
73 330
74 165
75 55
76 11
77 1

List of values

[0, 1, 1, 0, 2, 0, 1, 3, 3, 1, 0, 4, 4, 4, 0, 1, 5, 10, 10, 5, 1, 0, 6, 12, 20, 12, 6, 0, 1, 7, 21, 35, 35, 21, 7, 1, 0, 8, 24, 56, 64, 56, 24, 8, 0, 1, 9, 36, 84, 126, 126, 84, 36, 9, 1, 0, 10, 40, 120, 200, 252, 200, 120, 40, 10, 0, 1, 11, 55, 165, 330, 462, 462, 330, 165, 55, 11, 1]

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