E.g.f.: Product_{k>=1} (1 + x^k)^sin(x).

Terms

a(0) =1a(1) =0a(2) =2a(3) =3a(4) =40a(5) =80a(6) =1760a(7) =8211a(8) =139256a(9) =763272a(10) =19466578a(11) =147696835a(12) =3372858476a(13) =33370016316a(14) =872184749046