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.

A280411 Binary representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 261", based on the 5-celled von Neumann neighborhood.

Table of values

n a(n)
0 1
1 1
2 100
3 111
4 10000
5 11111
6 1000000
7 1111111
8 100000000
9 111111111
10 10000000000
11 11111111111
12 1000000000000
13 1111111111111
14 100000000000000
15 111111111111111
16 10000000000000000
17 11111111111111111
18 1000000000000000000
19 1111111111111111111

List of values

[1, 1, 100, 111, 10000, 11111, 1000000, 1111111, 100000000, 111111111, 10000000000, 11111111111, 1000000000000, 1111111111111, 100000000000000, 111111111111111, 10000000000000000, 11111111111111111, 1000000000000000000, 1111111111111111111]

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

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