A174206 Write natural numbers in base 2 as a stream of digits. Moving left to right, delete even occurrences of digit 0 and 1.

0, 1, 1, 1, 0, 0, 1, 1, 1, 1, 0, 0, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, 0, 1, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, 1, 1, 1, 0, 0, 1, 0, 1, 1, 0, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1

Offset

0,1

Links

Table of n, a(n) for n=0..64.

Example

Numbers in base 2: 0, 1, 10, 11, 100, 101, 110, 111, 1000..... Stream of digits: 0110111001011101111000 Delete even occurrences of 0(replaced by ~): 011~1110~10111~11110~0 Delete even occurrences of 1(replaced by ~): 01~~1~10~~01~1~~1~10~0 Left digits: 0, 1, 1, 1, 0, 0, 1, 1, 1, 1, 0, 0,....

Crossrefs

A174203-A174205, A174207-A174210

Sequence in context: A074322 A284935 A118249 * A265333 A159637 A095076

Adjacent sequences: A174203 A174204 A174205 * A174207 A174208 A174209

Keyword

easy,nonn,base,uned

Author

Paolo P. Lava and Giorgio Balzarotti, Mar 15 2010

Status

approved