Annual Appeal: Please make a donation (tax deductible in USA) to keep the OEIS running. Over 4500 articles have referenced us, often saying "we would not have discovered this result without the OEIS".
Table of n, a(n) for n=0..104.
0.10110001... = 1/2+1/8+1/16+1/256+...
Sequence in context: A214295 A145377 A218173 * A138709 A082960 A167683
Adjacent sequences: A068423 A068424 A068425 * A068427 A068428 A068429
Benoit Cloitre, Mar 09 2002
Offset corrected by R. J. Mathar, Feb 05 2009