OFFSET
0,1
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
KEYWORD
easy,nonn,base,uned
AUTHOR
Paolo P. Lava and Giorgio Balzarotti, Mar 15 2010
STATUS
approved