0,1

Table of n, a(n) for n=0..67.

Cf. A003422.

Sequence in context: A196929 A258445 A129179 * A201080 A039754 A213919

Adjacent sequences: A120618 A120619 A120620 * A120622 A120623 A120624

easy,nonn

Jason Earls, Aug 17 2006

approved