0,3
Cf. A011874, A014621.
Sequence in context: A127770 A121630 A089470 * A067146 A030019 A201627
Adjacent sequences: A014619 A014620 A014621 * A014623 A014624 A014625
nonn
Colin Mallows colinm(AT)research.avayalabs.com
More precise definition from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Sep 07 2008