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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.

A308590 Langton's ant on a Penrose rhomb tiling: number of black cells after n moves of the ant.

Table of values

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

List of values

[0, 1, 2, 3, 4, 5, 4, 5, 6, 7, 8, 9, 8, 7, 6, 7, 6, 7, 8, 9, 8, 9, 10, 11, 10, 9, 8, 7, 8, 7, 8, 9, 10, 9, 10, 11, 12, 11, 12, 13, 14, 13, 14, 15, 16, 15, 16, 17, 18, 17, 16, 15, 14, 13, 12, 11, 12, 11, 12, 13, 14, 13, 14, 13, 14, 15, 14, 13, 12, 13, 12, 13, 14]

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

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