1,1

Table of n, a(n) for n=1..72.

4, 12, 235, 3567, etc. are composite.

Cf. A075616.

Sequence in context: A072046 A123609 A215645 * A055182 A298919 A190649

Adjacent sequences: A075614 A075615 A075616 * A075618 A075619 A075620

base,nonn

Amarnath Murthy, Sep 29 2002

Corrected and extended by David Wasserman, Jan 21 2005

approved