Expansion of e.g.f.: sin(log(1+sin(x))).

Terms

a(0) =0a(1) =1a(2) =-1a(3) =0a(4) =4a(5) =-19a(6) =74a(7) =-290a(8) =1184a(9) =-5059a(10) =22124a(11) =-93580a(12) =320464a(13) =36401a(14) =-19721976a(15) =335907130a(16) =-4599046656a(17) =59558294361a(18) =-766372344976