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..19.
Log[ 1+Tan[ x ]*Cosh[ x ]]
Sequence in context: A232605 A026683 A197053 * A009380 A183329 A166406
Adjacent sequences: A009372 A009373 A009374 * A009376 A009377 A009378
R. H. Hardin
Extended with signs Mar 15 1997 by Olivier Gérard.