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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.

A266508 Binary representation of the n-th iteration of the "Rule 28" elementary cellular automaton starting with a single ON (black) cell.

Table of values

n a(n)
0 1
1 11
2 101
3 1011
4 10101
5 101011
6 1010101
7 10101011
8 101010101
9 1010101011
10 10101010101
11 101010101011
12 1010101010101
13 10101010101011
14 101010101010101
15 1010101010101011
16 10101010101010101
17 101010101010101011
18 1010101010101010101
19 10101010101010101011

List of values

[1, 11, 101, 1011, 10101, 101011, 1010101, 10101011, 101010101, 1010101011, 10101010101, 101010101011, 1010101010101, 10101010101011, 101010101010101, 1010101010101011, 10101010101010101, 101010101010101011, 1010101010101010101, 10101010101010101011]

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

Content is available under The OEIS End-User License Agreement.