0,3
Table of n, a(n) for n=0..17.
Sequence in context: A001274 A139766 A003276 * A181131 A145624 A025547
Adjacent sequences: A136089 A136090 A136091 * A136093 A136094 A136095
nonn
N. J. A. Sloane, Mar 25 2008
approved