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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.

A233777 Number of vertices in the n-th row of the toothpick structure of A233776, with a(0) = 1.

Table of values

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

List of values

[1, 1, 2, 2, 3, 2, 4, 4, 5, 2, 4, 4, 6, 4, 8, 8, 9, 2, 4, 4, 6, 4, 8, 8, 10, 4, 8, 8, 12, 8, 16, 16, 17, 2, 4, 4, 6, 4, 8, 8, 10, 4, 8, 8, 12, 8, 16, 16, 18, 4, 8, 8, 12, 8, 16, 16, 20, 8, 16, 16, 24, 16, 32, 32, 33, 2, 4, 4, 6, 4, 8, 8, 10, 4, 8, 8, 12]

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