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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.

A300558 a(n) is the concatenation n written in base 2 n times, n-1 written in base 2 n-1 times, ..., 1 written in base 2 once.

Table of values

n a(n)
1 1
2 10101
3 11111110101
4 10010010010011111110101
5 10110110110110110010010010011111110101
6 11011011011011011010110110110110110010010010011111110101
7 11111111111111111111111011011011011011010110110110110110010010010011111110101

List of values

[1, 10101, 11111110101, 10010010010011111110101, 10110110110110110010010010011111110101, 11011011011011011010110110110110110010010010011111110101, 11111111111111111111111011011011011011010110110110110110010010010011111110101]

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

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