cp's OEIS Frontend

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.

A131613 Numbers k such that the decimal expansion of 3^k contains no 9.

Table of values

n a(n)
1 0
2 1
3 3
4 4
5 5
6 7
7 8
8 11
9 12
10 16
11 19
12 20
13 21
14 29
15 32
16 56

List of values

[0, 1, 3, 4, 5, 7, 8, 11, 12, 16, 19, 20, 21, 29, 32, 56]