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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.

A053314 a(n) contains n digits (either '1' or '4') and is divisible by 2^n.

Table of values

n a(n)
1 4
2 44
3 144
4 4144
5 14144
6 414144
7 1414144
8 41414144
9 441414144
10 1441414144
11 11441414144
12 411441414144
13 4411441414144
14 44411441414144
15 444411441414144
16 1444411441414144
17 41444411441414144
18 441444411441414144

List of values

[4, 44, 144, 4144, 14144, 414144, 1414144, 41414144, 441414144, 1441414144, 11441414144, 411441414144, 4411441414144, 44411441414144, 444411441414144, 1444411441414144, 41444411441414144, 441444411441414144]

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

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