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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.

A090079 In binary expansion of n: reduce contiguous blocks of 0's to 0 and contiguous blocks of 1's to 1.

Table of values

n a(n)
0 0
1 1
2 2
3 1
4 2
5 5
6 2
7 1
8 2
9 5
10 10
11 5
12 2
13 5
14 2
15 1
16 2
17 5
18 10
19 5
20 10
21 21
22 10
23 5
24 2
25 5
26 10
27 5
28 2
29 5
30 2
31 1
32 2
33 5
34 10
35 5
36 10
37 21
38 10
39 5
40 10
41 21
42 42
43 21
44 10
45 21
46 10
47 5
48 2
49 5
50 10
51 5
52 10
53 21
54 10
55 5
56 2
57 5
58 10
59 5
60 2
61 5
62 2
63 1
64 2
65 5
66 10
67 5
68 10
69 21
70 10
71 5
72 10
73 21
74 42
75 21
76 10
77 21
78 10
79 5
80 10
81 21
82 42
83 21

List of values

[0, 1, 2, 1, 2, 5, 2, 1, 2, 5, 10, 5, 2, 5, 2, 1, 2, 5, 10, 5, 10, 21, 10, 5, 2, 5, 10, 5, 2, 5, 2, 1, 2, 5, 10, 5, 10, 21, 10, 5, 10, 21, 42, 21, 10, 21, 10, 5, 2, 5, 10, 5, 10, 21, 10, 5, 2, 5, 10, 5, 2, 5, 2, 1, 2, 5, 10, 5, 10, 21, 10, 5, 10, 21, 42, 21, 10, 21, 10, 5, 10, 21, 42, 21]

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