1,1

Table of n, a(n) for n=1..20.

Cf. A002110, A014545, A128420.

Sequence in context: A133706 A081710 A241947 * A115885 A259390 A029964

Adjacent sequences: A128418 A128419 A128420 * A128422 A128423 A128424

nonn

Pierre CAMI, Mar 02 2007

Corrected by Emeric Deutsch, Mar 06 2007

Edited by Ray Chandler, Mar 13 2007

approved