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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.

A239504 Number of digits in the decimal expansion of n^10 (A008454).

Table of values

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

List of values

[1, 1, 4, 5, 7, 7, 8, 9, 10, 10, 11, 11, 11, 12, 12, 12, 13, 13, 13, 13, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 19, 19, 19]

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