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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.

A139251 First differences of toothpicks numbers A139250.

Table of values

n a(n)
0 0
1 1
2 2
3 4
4 4
5 4
6 8
7 12
8 8
9 4
10 8
11 12
12 12
13 16
14 28
15 32
16 16
17 4
18 8
19 12
20 12
21 16
22 28
23 32
24 20
25 16
26 28
27 36
28 40
29 60
30 88
31 80
32 32
33 4
34 8
35 12
36 12
37 16
38 28
39 32
40 20
41 16
42 28
43 36
44 40
45 60
46 88
47 80
48 36
49 16
50 28
51 36
52 40
53 60
54 88
55 84
56 56
57 60
58 92
59 112
60 140
61 208
62 256
63 192
64 64
65 4
66 8
67 12
68 12
69 16
70 28
71 32
72 20
73 16
74 28

List of values

[0, 1, 2, 4, 4, 4, 8, 12, 8, 4, 8, 12, 12, 16, 28, 32, 16, 4, 8, 12, 12, 16, 28, 32, 20, 16, 28, 36, 40, 60, 88, 80, 32, 4, 8, 12, 12, 16, 28, 32, 20, 16, 28, 36, 40, 60, 88, 80, 36, 16, 28, 36, 40, 60, 88, 84, 56, 60, 92, 112, 140, 208, 256, 192, 64, 4, 8, 12, 12, 16, 28, 32, 20, 16, 28]

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