1,16

R. H. Hardin, Table of n, a(n) for n=1..1000

Cf. A001405.

Sequence in context: A103689 A245039 A161313 * A161032 A161083 A161299

Adjacent sequences: A161244 A161245 A161246 * A161248 A161249 A161250

nonn

R. H. Hardin, Jun 06 2009

approved