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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.

A074803 Kolakoski-(4,2) sequence: a(n) is length of n-th run.

Table of values

n a(n)
1 4
2 4
3 4
4 4
5 2
6 2
7 2
8 2
9 4
10 4
11 4
12 4
13 2
14 2
15 2
16 2
17 4
18 4
19 2
20 2
21 4
22 4
23 2
24 2
25 4
26 4
27 4
28 4
29 2
30 2
31 2
32 2
33 4
34 4
35 4
36 4
37 2
38 2
39 2
40 2
41 4
42 4
43 2
44 2
45 4
46 4
47 2
48 2
49 4
50 4
51 4
52 4
53 2
54 2
55 2
56 2
57 4
58 4
59 2
60 2
61 4
62 4
63 4
64 4
65 2
66 2
67 2
68 2
69 4
70 4
71 2
72 2
73 4
74 4
75 4
76 4
77 2
78 2
79 2
80 2
81 4
82 4
83 4
84 4
85 2
86 2
87 2
88 2
89 4
90 4
91 2
92 2
93 4
94 4
95 2
96 2
97 4
98 4
99 4
100 4
101 2
102 2
103 2
104 2
105 4

List of values

[4, 4, 4, 4, 2, 2, 2, 2, 4, 4, 4, 4, 2, 2, 2, 2, 4, 4, 2, 2, 4, 4, 2, 2, 4, 4, 4, 4, 2, 2, 2, 2, 4, 4, 4, 4, 2, 2, 2, 2, 4, 4, 2, 2, 4, 4, 2, 2, 4, 4, 4, 4, 2, 2, 2, 2, 4, 4, 2, 2, 4, 4, 4, 4, 2, 2, 2, 2, 4, 4, 2, 2, 4, 4, 4, 4, 2, 2, 2, 2, 4, 4, 4, 4, 2, 2, 2, 2, 4, 4, 2, 2, 4, 4, 2, 2, 4, 4, 4, 4, 2, 2, 2, 2, 4]

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