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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.

A356758 a(n) is the number of nonzero digits in n!.

Table of values

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

List of values

[1, 1, 1, 1, 2, 2, 2, 2, 3, 5, 5, 6, 5, 6, 9, 9, 10, 11, 11, 12, 12, 13, 14, 18, 18, 17, 19, 20, 20, 24, 24, 27, 26, 29, 28, 32, 32, 32, 29, 35, 39, 35, 39, 40, 43, 44, 42, 49, 48, 49, 46, 49, 50, 53, 54, 56, 58, 57, 62, 62, 63, 58, 66, 67, 70, 71, 70, 73, 72, 78, 81]

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

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