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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.

A080233 Triangle T(n,k) obtained by taking differences of consecutive pairs of row elements of Pascal's triangle A007318.

Table of values

n a(n)
0 1
1 1
2 0
3 1
4 1
5 -1
6 1
7 2
8 0
9 -2
10 1
11 3
12 2
13 -2
14 -3
15 1
16 4
17 5
18 0
19 -5
20 -4
21 1
22 5
23 9
24 5
25 -5
26 -9
27 -5
28 1
29 6
30 14
31 14
32 0
33 -14
34 -14
35 -6
36 1
37 7
38 20
39 28
40 14
41 -14
42 -28
43 -20
44 -7
45 1
46 8
47 27
48 48
49 42
50 0
51 -42
52 -48
53 -27
54 -8
55 1
56 9
57 35
58 75
59 90
60 42
61 -42
62 -90
63 -75
64 -35
65 -9

List of values

[1, 1, 0, 1, 1, -1, 1, 2, 0, -2, 1, 3, 2, -2, -3, 1, 4, 5, 0, -5, -4, 1, 5, 9, 5, -5, -9, -5, 1, 6, 14, 14, 0, -14, -14, -6, 1, 7, 20, 28, 14, -14, -28, -20, -7, 1, 8, 27, 48, 42, 0, -42, -48, -27, -8, 1, 9, 35, 75, 90, 42, -42, -90, -75, -35, -9]

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