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.

A290072 Binary representation of the diagonal from the origin to the corner 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 1
2 101
3 11
4 10111
5 1111
6 1011111
7 111111
8 101111111
9 11111111
10 10111111111
11 1111111111
12 1011111111111
13 111111111111
14 101111111111111
15 11111111111111
16 10111111111111111
17 1111111111111111
18 1011111111111111111
19 111111111111111111
20 101111111111111111111

List of values

[1, 1, 101, 11, 10111, 1111, 1011111, 111111, 101111111, 11111111, 10111111111, 1111111111, 1011111111111, 111111111111, 101111111111111, 11111111111111, 10111111111111111, 1111111111111111, 1011111111111111111, 111111111111111111, 101111111111111111111]

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

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