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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.

A297772 Number of distinct runs in base-4 digits of n.

Table of values

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

List of values

[1, 1, 1, 2, 1, 2, 2, 2, 2, 1, 2, 2, 2, 2, 1, 2, 2, 3, 3, 2, 1, 2, 2, 3, 2, 2, 3, 3, 2, 3, 2, 2, 3, 2, 3, 3, 2, 2, 3, 2, 2, 1, 2, 3, 3, 2, 2, 2, 3, 3, 2, 3, 2, 3, 2, 3, 3, 2, 2, 2, 2, 2, 1, 2, 2, 3, 3, 2, 3, 3, 3, 3, 3, 3, 4, 3, 3, 4, 3, 2, 3, 3, 3, 2, 1, 2]

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