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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.

A334097 a(n) is the exponent of the eventual power of 2 reached when starting from n and using the map k -> k + k/p, where p can be any odd prime factor of k, for example, the largest.

Table of values

n a(n)
1 0
2 1
3 2
4 2
5 3
6 3
7 3
8 3
9 4
10 4
11 4
12 4
13 4
14 4
15 5
16 4
17 5
18 5
19 5
20 5
21 5
22 5
23 5
24 5
25 6
26 5
27 6
28 5
29 6
30 6
31 5
32 5
33 6
34 6
35 6
36 6
37 6
38 6
39 6
40 6
41 6
42 6
43 6
44 6
45 7
46 6
47 6
48 6
49 6
50 7
51 7
52 6
53 7
54 7
55 7
56 6
57 7
58 7
59 7
60 7
61 6
62 6
63 7
64 6
65 7
66 7
67 7
68 7
69 7
70 7
71 7
72 7
73 7
74 7
75 8
76 7
77 7
78 7
79 7
80 7
81 8
82 7
83 7
84 7
85 8
86 7
87 8
88 7
89 8
90 8
91 7
92 7
93 7
94 7
95 8
96 7
97 7
98 7
99 8
100 8
101 8
102 8
103 7
104 7
105 8

List of values

[0, 1, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 5, 4, 5, 5, 5, 5, 5, 5, 5, 5, 6, 5, 6, 5, 6, 6, 5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7, 6, 6, 6, 6, 7, 7, 6, 7, 7, 7, 6, 7, 7, 7, 7, 6, 6, 7, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 8, 7, 7, 7, 7, 7, 8, 7, 7, 7, 8, 7, 8, 7, 8, 8, 7, 7, 7, 7, 8, 7, 7, 7, 8, 8, 8, 8, 7, 7, 8]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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