1,3
Table of n, a(n) for n=1..5.
Cf. A068000.
Sequence in context: A072218 A046844 A198244 * A213645 A004022 A083344
Adjacent sequences: A066950 A066951 A066952 * A066954 A066955 A066956
nonn
Benoit Cloitre, Feb 01 2002
approved