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=0..22.
Tanh[ x ]/Cosh[ Log[ 1+x ] ]
Sequence in context: A022835 A022834 A046610 * A169729 A070368 A066326
Adjacent sequences: A009839 A009840 A009841 * A009843 A009844 A009845
R. H. Hardin
Extended with signs Mar 15 1997 by Olivier Gérard.