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.

A223079 Positive integers, written in base 4, with the property that if the base-4 representation is reversed the result is three times the original number.

Table of values

n a(n)
1 1023
2 10323
3 103323
4 1033323
5 10231023
6 10333323
7 102301023
8 103333323
9 1023001023
10 1032310323
11 1033333323
12 10230001023
13 10323010323
14 10333333323
15 102300001023
16 102310231023
17 103230010323
18 103323103323
19 103333333323

List of values

[1023, 10323, 103323, 1033323, 10231023, 10333323, 102301023, 103333323, 1023001023, 1032310323, 1033333323, 10230001023, 10323010323, 10333333323, 102300001023, 102310231023, 103230010323, 103323103323, 103333333323]

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

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