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.
tan(log(x+1)^2) = 2/2!*x^2-6/3!*x^3+22/4!*x^4-100/5!*x^5...
Tan[ Log[ 1+x ]^2 ]
Sequence in context: A009585 A012267 A012268 * A002772 A000140 A079263
Adjacent sequences: A009652 A009653 A009654 * A009656 A009657 A009658
R. H. Hardin
Extended with signs by Olivier Gérard, Mar 15 1997.