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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.

A039724 a(n) is the negabinary expansion of n, that is, the expansion of n in base -2.

Table of values

n a(n)
0 0
1 1
2 110
3 111
4 100
5 101
6 11010
7 11011
8 11000
9 11001
10 11110
11 11111
12 11100
13 11101
14 10010
15 10011
16 10000
17 10001
18 10110
19 10111
20 10100
21 10101
22 1101010
23 1101011
24 1101000
25 1101001
26 1101110
27 1101111
28 1101100
29 1101101
30 1100010
31 1100011
32 1100000
33 1100001
34 1100110
35 1100111
36 1100100

List of values

[0, 1, 110, 111, 100, 101, 11010, 11011, 11000, 11001, 11110, 11111, 11100, 11101, 10010, 10011, 10000, 10001, 10110, 10111, 10100, 10101, 1101010, 1101011, 1101000, 1101001, 1101110, 1101111, 1101100, 1101101, 1100010, 1100011, 1100000, 1100001, 1100110, 1100111, 1100100]

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

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