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.

A080070 Decimal encoding of parenthesizations produced by simple iteration starting from empty parentheses and where each successive parenthesization is obtained from the previous by reflecting it as a general tree/parenthesization, then adding an extra stem below the root and then reflecting the underlying binary tree.

Table of values

n a(n)
0 0
1 10
2 1010
3 101100
4 10110010
5 1011100100
6 101100110100
7 10111001001100
8 1011100110100010
9 101110011010011000
10 10110011101001100010
11 1011110010011011000100
12 101100111011010001100100

List of values

[0, 10, 1010, 101100, 10110010, 1011100100, 101100110100, 10111001001100, 1011100110100010, 101110011010011000, 10110011101001100010, 1011110010011011000100, 101100111011010001100100]

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

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