%I #11 Apr 02 2017 15:40:38
%S 0,0,1,-3,11,-50,214,-504,-6252,162576,-2754684,42663060,-650722260,
%T 10034523720,-158078985000,2553082867440,-42265263885600,
%U 715134876153600,-12299306666944560,213041497002431760,-3658374963886842000,60422495064228108000
%N Expansion of sin(log(1+x)^2)/2.
%t Sin[ Log[ 1+x ]^2 ]/2
%Y Cf. A009468.
%K sign
%O 0,4
%A _R. H. Hardin_
%E Extended with signs, Mar 1997