Expansion of sinh(log(1+x)^2)/2.

Terms

a(0) =0a(1) =0a(2) =1a(3) =-3a(4) =11a(5) =-50a(6) =334a(7) =-3024a(8) =32388a(9) =-381744a(10) =4838076a(11) =-65583540a(12) =950021940a(13) =-14693894280a(14) =242272566600