1,1
Table of n, a(n) for n=1..4.
Cf. A181701, A181595, A181596, A000396
Sequence in context: A141717 A185742 A286876 * A304890 A264155 A241254
Adjacent sequences: A181699 A181700 A181701 * A181703 A181704 A181705
nonn
Vladimir Shevelev, Nov 06 2010
32128 removed by R. J. Mathar, Dec 05 2010
approved