1,1
Table of n, a(n) for n=1..12.
Cf. A000695 A152021 A152022.
Sequence in context: A115342 A036547 A031694 * A165798 A158693 A211259
Adjacent sequences: A152020 A152021 A152022 * A152024 A152025 A152026
nonn
Vladimir Shevelev, Nov 20 2008, Jun 11 2009
approved