1,2
Table of n, a(n) for n=1..15.
Cf. A001676, A228689-A228692.
Sequence in context: A343259 A173252 A051502 * A121721 A173476 A281129
Adjacent sequences: A228687 A228688 A228689 * A228691 A228692 A228693
nonn,more
N. J. A. Sloane, Aug 30 2013
approved