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.

A306105 Numbers with digits in {0,1,2} such that every other digit is strictly less than its neighbors.

Table of values

n a(n)
1 0
2 1
3 2
4 10
5 20
6 21
7 101
8 102
9 201
10 202
11 212
12 1010
13 1020
14 1021
15 2010
16 2020
17 2021
18 2120
19 2121
20 10101
21 10102
22 10201
23 10202
24 10212
25 20101
26 20102
27 20201
28 20202
29 20212
30 21201
31 21202
32 21212
33 101010
34 101020
35 101021
36 102010
37 102020
38 102021
39 102120
40 102121

List of values

[0, 1, 2, 10, 20, 21, 101, 102, 201, 202, 212, 1010, 1020, 1021, 2010, 2020, 2021, 2120, 2121, 10101, 10102, 10201, 10202, 10212, 20101, 20102, 20201, 20202, 20212, 21201, 21202, 21212, 101010, 101020, 101021, 102010, 102020, 102021, 102120, 102121]