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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.

A055656 Excess in exponents of powers of 2 in Euler phi of n! compared to that of n!.

Table of values

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

List of values

[0, -1, 0, 0, 2, 2, 3, 3, 3, 3, 4, 4, 6, 6, 6, 6, 10, 10, 11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 14, 14, 15, 15, 15, 15, 15, 15, 17, 17, 17, 17, 20, 20, 21, 21, 21, 21, 22, 22, 22, 22, 22, 22, 24, 24, 24, 24, 24, 24, 25, 25, 27, 27, 27, 27, 27, 27, 28, 28, 28, 28, 29, 29, 32, 32]

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