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.

A071672 The binary encoding of parenthesizations given in a "global arithmetic order", using A001477 as the packing bijection N X N -> N.

Table of values

n a(n)
1 10
2 1100
3 1010
4 111000
5 110010
6 101100
7 110100
8 11100010
9 11001100
10 101010
11 11110000
12 11010010
13 1110001100
14 11001010
15 10111000
16 11100100
17 1111000010
18 1101001100
19 1110001010
20 1100111000
21 10110010
22 11011000
23 1110010010

List of values

[10, 1100, 1010, 111000, 110010, 101100, 110100, 11100010, 11001100, 101010, 11110000, 11010010, 1110001100, 11001010, 10111000, 11100100, 1111000010, 1101001100, 1110001010, 1100111000, 10110010, 11011000, 1110010010]

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

Content is available under The OEIS End-User License Agreement.