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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.

A043561 Number of runs in base-9 representation of n.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 1
5 1
6 1
7 1
8 1
9 2
10 1
11 2
12 2
13 2
14 2
15 2
16 2
17 2
18 2
19 2
20 1
21 2
22 2
23 2
24 2
25 2
26 2
27 2
28 2
29 2
30 1
31 2
32 2
33 2
34 2
35 2
36 2
37 2
38 2
39 2
40 1
41 2
42 2
43 2
44 2
45 2
46 2
47 2
48 2
49 2
50 1
51 2
52 2
53 2
54 2
55 2
56 2
57 2
58 2
59 2
60 1
61 2
62 2
63 2
64 2
65 2
66 2
67 2
68 2
69 2
70 1
71 2
72 2
73 2
74 2
75 2
76 2
77 2
78 2
79 2
80 1
81 2
82 3
83 3
84 3
85 3
86 3
87 3
88 3
89 3

List of values

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

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