Expansion of e.g.f.: exp(x)/cosh(sin(x)).

Terms

a(0) =1a(1) =1a(2) =0a(3) =-2a(4) =4a(5) =36a(6) =-56a(7) =-944a(8) =2192a(9) =45136a(10) =-128448a(11) =-3263072a(12) =11141824a(13) =334656960a(14) =-1332816512a(15) =-46199442176a(16) =210250492160