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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.

A280340 a(n) = a(n-1) + 10^n * a(n-2) with a(0) = 1 and a(1) = 1.

Table of values

n a(n)
0 1
1 1
2 101
3 1101
4 1011101
5 111111101
6 1011212111101
7 1112122222111101
8 101122323232322111101
9 1112223344434333322111101
10 1011224344546565545343322111101
11 111223345667777878776655443322111101
12 1011224455769911213121200887756443322111101

List of values

[1, 1, 101, 1101, 1011101, 111111101, 1011212111101, 1112122222111101, 101122323232322111101, 1112223344434333322111101, 1011224344546565545343322111101, 111223345667777878776655443322111101, 1011224455769911213121200887756443322111101]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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