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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.

A304453 An expanded binary notation for n: the normal binary expansion for n is expanded by mapping each 1 to 10 and retaining the existing 0's.

Table of values

n a(n)
0 0
1 10
2 100
3 1010
4 1000
5 10010
6 10100
7 101010
8 10000
9 100010
10 100100
11 1001010
12 101000
13 1010010
14 1010100
15 10101010
16 100000
17 1000010
18 1000100
19 10001010
20 1001000
21 10010010
22 10010100
23 100101010
24 1010000
25 10100010
26 10100100
27 101001010
28 10101000
29 101010010
30 101010100
31 1010101010
32 1000000
33 10000010
34 10000100

List of values

[0, 10, 100, 1010, 1000, 10010, 10100, 101010, 10000, 100010, 100100, 1001010, 101000, 1010010, 1010100, 10101010, 100000, 1000010, 1000100, 10001010, 1001000, 10010010, 10010100, 100101010, 1010000, 10100010, 10100100, 101001010, 10101000, 101010010, 101010100, 1010101010, 1000000, 10000010, 10000100]

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

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