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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.

A217921 Number of steps to calculate A175872(n).

Table of values

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

List of values

[0, 1, 0, 2, 1, 2, 0, 2, 2, 1, 3, 3, 3, 2, 0, 2, 2, 4, 3, 3, 1, 4, 3, 2, 3, 3, 2, 2, 3, 2, 0, 2, 2, 4, 2, 2, 4, 3, 2, 3, 4, 1, 3, 4, 3, 4, 3, 2, 2, 4, 3, 3, 3, 2, 2, 3, 2, 3, 2, 2, 3, 2, 0, 2, 2, 4, 2, 2, 4, 2, 3, 2, 2, 4, 5, 3, 4, 2, 2, 3, 4, 3, 3, 3, 1, 4]

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