Expansion of e.g.f. log(1 + x*sec(x))*exp(x).

Terms

a(0) =0a(1) =1a(2) =1a(3) =5a(4) =0a(5) =64a(6) =-245a(7) =2757a(8) =-23576a(9) =272256a(10) =-3270977a(11) =45055845a(12) =-671589952a(13) =10984688636a(14) =-193875825117