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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.

A290070 Binary representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 641", based on the 5-celled von Neumann neighborhood.

Table of values

n a(n)
0 1
1 10
2 101
3 1100
4 11101
5 111100
6 1111101
7 11111100
8 111111101
9 1111111100
10 11111111101
11 111111111100
12 1111111111101
13 11111111111100
14 111111111111101
15 1111111111111100
16 11111111111111101
17 111111111111111100
18 1111111111111111101
19 11111111111111111100

List of values

[1, 10, 101, 1100, 11101, 111100, 1111101, 11111100, 111111101, 1111111100, 11111111101, 111111111100, 1111111111101, 11111111111100, 111111111111101, 1111111111111100, 11111111111111101, 111111111111111100, 1111111111111111101, 11111111111111111100]

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

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