Expansion of the e.g.f. sin(x)*(1+x).

Terms

a(0) =0a(1) =1a(2) =2a(3) =-1a(4) =-4a(5) =1a(6) =6a(7) =-1a(8) =-8a(9) =1a(10) =10a(11) =-1a(12) =-12a(13) =1a(14) =14a(15) =-1a(16) =-16a(17) =1a(18) =18a(19) =-1a(20) =-20a(21) =1a(22) =22a(23) =-1a(24) =-24a(25) =1a(26) =26a(27) =-1a(28) =-28a(29) =1