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.

A004643 Powers of 2 written in base 4.

Table of values

n a(n)
0 1
1 2
2 10
3 20
4 100
5 200
6 1000
7 2000
8 10000
9 20000
10 100000
11 200000
12 1000000
13 2000000
14 10000000
15 20000000
16 100000000
17 200000000
18 1000000000
19 2000000000
20 10000000000
21 20000000000
22 100000000000
23 200000000000

List of values

[1, 2, 10, 20, 100, 200, 1000, 2000, 10000, 20000, 100000, 200000, 1000000, 2000000, 10000000, 20000000, 100000000, 200000000, 1000000000, 2000000000, 10000000000, 20000000000, 100000000000, 200000000000]

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

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