Invitation: celebrating 50 years of OEIS, 250000 sequences, and Sloane's 75th, there will be a conference at DIMACS, Rutgers, Oct 9-10 2014.
1,2
Table of n, a(n) for n=1..9.
Sequence in context: A173945 A111846 A102922 * A197356 A072445 A000841
Adjacent sequences: A139685 A139686 A139687 * A139689 A139690 A139691
nonn
R. H. Hardin, Jun 13 2008
approved