Posted by Stranger on Monday, March 18, 2013 at 5:18am.
What is the 50th smallest positive integer that can be written as the sum of distinct nonnegative integer powers of 3?

Number theroy  anonymous, Monday, March 18, 2013 at 6:51am
from briliant

Number theroy  petronav, Sunday, March 20, 2016 at 10:38am
perhaps it's 327
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