%I #11 Apr 02 2017 15:39:13
%S 0,0,1,-3,7,-10,-18,168,360,-19008,262080,-2724480,25194240,
%T -232951680,2505444480,-34676812800,577980748800,-10296734515200,
%U 185178186547200,-3347775973785600,62005095419904000,-1204098364514304000
%N Expansion of tanh(log(1+x))*log(1+x)/2.
%t Tanh[ Log[ 1+x ] ]*Log[ 1+x ]/2
%Y Cf. A009779.
%K sign
%O 0,4
%A _R. H. Hardin_
%E Extended with signs, Mar 1997