0,1
Table of n, a(n) for n=0..29.
First differences give A151712.
Sequence in context: A061258 A057660 A130972 * A187264 A067498 A018345
Adjacent sequences: A151920 A151921 A151922 * A151924 A151925 A151926
nonn,easy
N. J. A. Sloane, Aug 05 2009
approved