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.

A062033 Binary expansion of n does not contain 1-bits at even positions. Integers whose base 4 representation consists of only 0's and 2s.

Table of values

n a(n)
0 0
1 10
2 1000
3 1010
4 100000
5 100010
6 101000
7 101010
8 10000000
9 10000010
10 10001000
11 10001010
12 10100000
13 10100010
14 10101000
15 10101010
16 1000000000
17 1000000010
18 1000001000
19 1000001010
20 1000100000
21 1000100010
22 1000101000
23 1000101010
24 1010000000
25 1010000010
26 1010001000

List of values

[0, 10, 1000, 1010, 100000, 100010, 101000, 101010, 10000000, 10000010, 10001000, 10001010, 10100000, 10100010, 10101000, 10101010, 1000000000, 1000000010, 1000001000, 1000001010, 1000100000, 1000100010, 1000101000, 1000101010, 1010000000, 1010000010, 1010001000]

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

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