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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.

A377369 a(n) = total number of bits in the binary representation of the prime factorization of n (including exponents > 1).

Table of values

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

List of values

[0, 2, 2, 4, 3, 4, 3, 4, 4, 5, 4, 6, 4, 5, 5, 5, 5, 6, 5, 7, 5, 6, 5, 6, 5, 6, 4, 7, 5, 7, 5, 5, 6, 7, 6, 8, 6, 7, 6, 7, 6, 7, 6, 8, 7, 7, 6, 7, 5, 7, 7, 8, 6, 6, 7, 7, 7, 7, 6, 9, 6, 7, 7, 5, 7, 8, 7, 9, 7, 8, 7, 8, 7, 8, 7, 9, 7, 8, 7, 8, 5, 8, 7, 9, 8, 8, 7, 8, 7, 9]

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

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