1,2
Table of n, a(n) for n=1..22.
Cf. A106108, A132199, A137613.
Sequence in context: A175942 A181669 A052940 * A102444 A132177 A046138
Adjacent sequences: A191301 A191302 A191303 * A191305 A191306 A191307
nonn
Robert G. Wilson v, Apr 30 2009
approved