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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.

A239008 Exponents m such that the decimal expansion of 3^m exhibits its first zero from the right later than any previous exponent.

Table of values

n a(n)
1 0
2 3
3 5
4 7
5 9
6 11
7 13
8 19
9 23
10 24
11 26
12 28
13 31
14 34
15 52
16 65
17 68
18 136
19 237
20 4947
21 7648
22 42073
23 50693
24 52728
25 395128
26 2544983
27 6013333
28 76350564
29 160451107
30 641814146
31 5291528429
32 5856442430
33 7307126644
34 11577159988
35 51444010646
36 60457925746

List of values

[0, 3, 5, 7, 9, 11, 13, 19, 23, 24, 26, 28, 31, 34, 52, 65, 68, 136, 237, 4947, 7648, 42073, 50693, 52728, 395128, 2544983, 6013333, 76350564, 160451107, 641814146, 5291528429, 5856442430, 7307126644, 11577159988, 51444010646, 60457925746]