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..40.
Sequence in context: A155680 A116517 A081544 * A053744 A034085 A173435
Adjacent sequences: A104665 A104666 A104667 * A104669 A104670 A104671
Zak Seidov, Apr 22 2005