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..32.
Sequence in context: A105417 A105416 A180465 * A031754 A031536 A181973
Adjacent sequences: A031623 A031624 A031625 * A031627 A031628 A031629
David W. Wilson