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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.

A160173 Number of T-toothpicks added at n-th stage to the T-toothpick structure of A160172.

Table of values

n a(n)
0 0
1 1
2 3
3 5
4 9
5 9
6 9
7 13
8 25
9 21
10 9
11 13
12 25
13 25
14 25
15 37
16 73
17 57
18 9
19 13
20 25
21 25
22 25
23 37
24 73
25 61
26 25
27 37
28 73
29 73
30 73
31 109
32 217
33 165
34 9
35 13
36 25
37 25
38 25
39 37
40 73
41 61
42 25
43 37
44 73
45 73
46 73
47 109
48 217
49 169
50 25
51 37
52 73
53 73
54 73
55 109
56 217
57 181
58 73
59 109
60 217
61 217
62 217
63 325
64 649
65 489
66 9
67 13
68 25

List of values

[0, 1, 3, 5, 9, 9, 9, 13, 25, 21, 9, 13, 25, 25, 25, 37, 73, 57, 9, 13, 25, 25, 25, 37, 73, 61, 25, 37, 73, 73, 73, 109, 217, 165, 9, 13, 25, 25, 25, 37, 73, 61, 25, 37, 73, 73, 73, 109, 217, 169, 25, 37, 73, 73, 73, 109, 217, 181, 73, 109, 217, 217, 217, 325, 649, 489, 9, 13, 25]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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