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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.

A317955 Apply the morphism 1 -> 12, 2 -> 13, 3 -> 14, 4 -> 1 n times to 1, and concatenate the resulting string.

Table of values

n a(n)
1 1
2 12
3 1213
4 12131214
5 121312141213121
6 12131214121312112131214121312
7 12131214121312112131214121312121312141213121121312141213

List of values

[1, 12, 1213, 12131214, 121312141213121, 12131214121312112131214121312, 12131214121312112131214121312121312141213121121312141213]

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

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