Invitation: celebrating 50 years of OEIS, 250000 sequences, and Sloane's 75th, there will be a conference at DIMACS, Rutgers, Oct 9-10 2014.
Table of n, a(n) for n=1..24.
Sequence in context: A015519 A096977 A084098 * A178138 A220888 A038607
Adjacent sequences: A152816 A152817 A152818 * A152820 A152821 A152822
Vladimir Shevelev, Dec 13 2008