cp's OEIS Frontend

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.

A138831 n-th perfect number minus 1, written in base 2.

Table of values

n a(n)
1 101
2 11011
3 111101111
4 1111110111111
5 1111111111110111111111111
6 111111111111111101111111111111111
7 1111111111111111110111111111111111111

List of values

[101, 11011, 111101111, 1111110111111, 1111111111110111111111111, 111111111111111101111111111111111, 1111111111111111110111111111111111111]

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

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