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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.

A360505 Concatenate the ternary strings for n, n-1, n-2, ..., 2, 1.

Table of values

n a(n)
1 1
2 21
3 1021
4 111021
5 12111021
6 2012111021
7 212012111021
8 22212012111021
9 10022212012111021
10 10110022212012111021
11 10210110022212012111021
12 11010210110022212012111021
13 11111010210110022212012111021
14 11211111010210110022212012111021
15 12011211111010210110022212012111021

List of values

[1, 21, 1021, 111021, 12111021, 2012111021, 212012111021, 22212012111021, 10022212012111021, 10110022212012111021, 10210110022212012111021, 11010210110022212012111021, 11111010210110022212012111021, 11211111010210110022212012111021, 12011211111010210110022212012111021]

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