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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.

A097660 Number of zeros in decimal representation of 1001^n.

Table of values

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

List of values

[0, 2, 4, 6, 8, 10, 10, 10, 12, 10, 12, 8, 8, 6, 18, 14, 10, 10, 8, 5, 12, 14, 9, 7, 10, 18, 14, 13, 15, 13, 15, 10, 14, 12, 17, 16, 17, 15, 13, 21, 24, 15, 9, 16, 12, 22, 20, 21, 20, 16, 19, 16, 21, 20, 25, 20, 20, 21, 26, 19, 20, 19, 22, 19, 17, 23, 28, 24, 22, 20, 27, 26, 25]

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

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