1,3
Table of n, a(n) for n=1..78.
Cf. A008784 A132662.
Sequence in context: A196241 A086592 A279783 * A023964 A000267 A249728
Adjacent sequences: A132660 A132661 A132662 * A132664 A132665 A132666
nonn
Colin Barker, Aug 24 2007
approved