cp's OEIS Frontend

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.

A325631 Langton's ant on an elongated triangular tiling: number of black cells after n moves of the ant when starting on a square and initially looking towards one of the edges where that square meets one of the neighboring triangles.

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 9
14 10
15 11
16 12
17 13
18 12
19 13
20 14
21 15
22 14
23 13
24 14
25 15
26 16
27 15
28 16
29 17
30 16
31 15
32 16
33 17
34 18
35 17
36 16
37 15
38 16
39 17
40 18
41 19
42 20
43 19
44 18
45 19
46 20
47 19
48 20
49 21
50 22
51 23
52 24
53 23
54 22
55 23
56 22
57 23
58 22
59 21
60 20
61 19
62 18
63 19
64 18
65 17
66 18
67 19
68 20

List of values

[0, 1, 2, 3, 4, 5, 4, 5, 6, 7, 8, 9, 8, 9, 10, 11, 12, 13, 12, 13, 14, 15, 14, 13, 14, 15, 16, 15, 16, 17, 16, 15, 16, 17, 18, 17, 16, 15, 16, 17, 18, 19, 20, 19, 18, 19, 20, 19, 20, 21, 22, 23, 24, 23, 22, 23, 22, 23, 22, 21, 20, 19, 18, 19, 18, 17, 18, 19, 20]