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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.

A033564 a(n+1) = concatenation of a(n) and a(n)+1, with a(0)=1.

Table of values

n a(n)
0 1
1 12
2 1213
3 12131214
4 1213121412131215
5 12131214121312151213121412131216
6 1213121412131215121312141213121612131214121312151213121412131217

List of values

[1, 12, 1213, 12131214, 1213121412131215, 12131214121312151213121412131216, 1213121412131215121312141213121612131214121312151213121412131217]

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

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