A174208 - OEIS

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A174208

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

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

(list; graph; refs; listen; history; text; internal format)

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 odd occurrences of 0 (replace by ~): ~110111~01~11101111~0~...

Delete even occurrences of 1 (replace by ~): ~1~01~1~0~~1~10~1~1~0~...

This leaves the digits: 1, 0, 1, 1, 0, 1, 1, 0, 1, 1, 0,....

CROSSREFS