1,2

Table of n, a(n) for n=1..17.

Cf. A002808, A000290, A053769.

Sequence in context: A192733 A192144 A026628 * A255719 A134927 A108306

Adjacent sequences: A053765 A053766 A053767 * A053769 A053770 A053771

nonn

G. L. Honaker, Jr., Mar 29 2000

a(9)-a(15) from Donovan Johnson, Dec 04 2009

a(16)-a(17) from Donovan Johnson, Jun 09 2011

approved