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.

A170905 Consider the hexagonal cellular automaton defined in A151723, A151724; a(n) = number of cells that go from OFF to ON at stage n, if we only look at a 60-degree wedge (including the two bounding edges).

Table of values

n a(n)
0 0
1 1
2 2
3 2
4 4
5 2
6 4
7 6
8 8
9 2
10 4
11 6
12 10
13 10
14 8
15 14
16 16
17 2
18 4
19 6
20 10
21 10
22 10
23 18
24 26
25 18
26 8
27 14
28 24
29 28
30 20
31 32
32 32
33 2
34 4
35 6
36 10
37 10
38 10
39 18
40 26
41 18
42 10
43 18
44 30
45 38
46 34
47 42
48 58
49 34
50 8
51 14
52 24
53 28
54 28
55 44
56 68
57 60
58 28
59 32
60 56
61 70
62 50
63 70
64 64
65 2
66 4
67 6
68 10
69 10
70 10
71 18
72 26
73 18
74 10
75 18
76 30
77 38
78 34
79 42

List of values

[0, 1, 2, 2, 4, 2, 4, 6, 8, 2, 4, 6, 10, 10, 8, 14, 16, 2, 4, 6, 10, 10, 10, 18, 26, 18, 8, 14, 24, 28, 20, 32, 32, 2, 4, 6, 10, 10, 10, 18, 26, 18, 10, 18, 30, 38, 34, 42, 58, 34, 8, 14, 24, 28, 28, 44, 68, 60, 28, 32, 56, 70, 50, 70, 64, 2, 4, 6, 10, 10, 10, 18, 26, 18, 10, 18, 30, 38, 34, 42]