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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.

A378306 Unique sequence s starting with 2,2 such that if r(r(r(s))) = s and r(s) != s and r(r(s)) != s, where r(#) denotes the runlength sequence of a sequence #.

Table of values

n a(n)
1 2
2 2
3 1
4 2
5 2
6 1
7 1
8 2
9 1
10 2
11 2
12 1
13 2
14 1
15 1
16 2
17 2
18 1
19 2
20 2
21 1
22 2
23 1
24 1
25 2
26 1
27 2
28 2
29 1
30 1
31 2
32 1
33 1
34 2
35 2
36 1
37 2
38 1
39 1
40 2
41 1
42 1
43 2
44 2
45 1
46 2
47 2
48 1
49 2
50 1
51 1
52 2
53 1
54 2
55 2
56 1
57 1
58 2
59 1
60 1
61 2
62 1
63 2
64 2
65 1
66 2
67 2
68 1
69 1
70 2
71 1
72 2
73 2
74 1
75 2
76 1
77 1
78 2
79 2
80 1
81 2
82 2
83 1
84 1
85 2
86 1

List of values

[2, 2, 1, 2, 2, 1, 1, 2, 1, 2, 2, 1, 2, 1, 1, 2, 2, 1, 2, 2, 1, 2, 1, 1, 2, 1, 2, 2, 1, 1, 2, 1, 1, 2, 2, 1, 2, 1, 1, 2, 1, 1, 2, 2, 1, 2, 2, 1, 2, 1, 1, 2, 1, 2, 2, 1, 1, 2, 1, 1, 2, 1, 2, 2, 1, 2, 2, 1, 1, 2, 1, 2, 2, 1, 2, 1, 1, 2, 2, 1, 2, 2, 1, 1, 2, 1]

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