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.

A277916 Binary representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 4", based on the 5-celled von Neumann neighborhood.

Table of values

n a(n)
0 1
1 10
2 100
3 1010
4 10000
5 101000
6 1000100
7 10101010
8 100000000
9 1010000000
10 10001000000
11 101010100000
12 1000000010000
13 10100000101000
14 100010001000100
15 1010101010101010
16 10000000000000000
17 101000000000000000
18 1000100000000000000
19 10101010000000000000

List of values

[1, 10, 100, 1010, 10000, 101000, 1000100, 10101010, 100000000, 1010000000, 10001000000, 101010100000, 1000000010000, 10100000101000, 100010001000100, 1010101010101010, 10000000000000000, 101000000000000000, 1000100000000000000, 10101010000000000000]

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

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