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.

A061581 a(1) = 1, a(n) = number obtained by replacing each digit of a(n-1) with its double.

Table of values

n a(n)
1 1
2 2
3 4
4 8
5 16
6 212
7 424
8 848
9 16816
10 21216212
11 424212424
12 848424848
13 1681684816816
14 212162121681621216212
15 42421242421216212424212424
16 848424848424212424848424848
17 16816848168168484248481681684816816

List of values

[1, 2, 4, 8, 16, 212, 424, 848, 16816, 21216212, 424212424, 848424848, 1681684816816, 212162121681621216212, 42421242421216212424212424, 848424848424212424848424848, 16816848168168484248481681684816816]

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

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