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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.

A283508 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 643", based on the 5-celled von Neumann neighborhood.

Table of values

n a(n)
0 1
1 10
2 101
3 1011
4 10111
5 101111
6 1011111
7 10111111
8 101111111
9 1011111111
10 10111111111
11 101111111111
12 1011111111111
13 10111111111111
14 101111111111111
15 1011111111111111
16 10111111111111111
17 101111111111111111
18 1011111111111111111
19 10111111111111111111

List of values

[1, 10, 101, 1011, 10111, 101111, 1011111, 10111111, 101111111, 1011111111, 10111111111, 101111111111, 1011111111111, 10111111111111, 101111111111111, 1011111111111111, 10111111111111111, 101111111111111111, 1011111111111111111, 10111111111111111111]

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

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