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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.

A337132 a(n) is the number of squares at distance n from the central square of a Vicsek fractal.

Table of values

n a(n)
0 1
1 4
2 4
3 4
4 12
5 4
6 4
7 12
8 4
9 4
10 12
11 12
12 12
13 36
14 4
15 4
16 12
17 4
18 4
19 12
20 12
21 12
22 36
23 4
24 4
25 12
26 4
27 4
28 12
29 12
30 12
31 36
32 12
33 12
34 36
35 12
36 12
37 36
38 36
39 36
40 108
41 4
42 4
43 12
44 4
45 4
46 12
47 12
48 12
49 36
50 4
51 4
52 12
53 4
54 4
55 12
56 12
57 12
58 36
59 12
60 12
61 36
62 12
63 12
64 36
65 36
66 36
67 108
68 4
69 4
70 12

List of values

[1, 4, 4, 4, 12, 4, 4, 12, 4, 4, 12, 12, 12, 36, 4, 4, 12, 4, 4, 12, 12, 12, 36, 4, 4, 12, 4, 4, 12, 12, 12, 36, 12, 12, 36, 12, 12, 36, 36, 36, 108, 4, 4, 12, 4, 4, 12, 12, 12, 36, 4, 4, 12, 4, 4, 12, 12, 12, 36, 12, 12, 36, 12, 12, 36, 36, 36, 108, 4, 4, 12]

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

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