Print 2^n graph in ASCII

Your challenge is to output this infinite graph:

o
o
oo
oo
oo
oo
ooo
ooo
ooo
ooo
ooo
ooo
ooo
ooo
oooo
oooo
oooo
oooo
oooo
oooo
oooo
oooo
oooo
oooo
oooo
oooo
oooo
oooo
oooo
oooo
ooooo
ooooo
ooooo
ooooo
ooooo
ooooo
...

with everythe xth line having floor(log_2(x)) os (or other characters). Tag: code-golf, ascii-art, kolmogorov-complexity.