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

Terms

a(0) =1a(1) =1a(2) =2a(3) =1a(4) =7a(5) =-19a(6) =136a(7) =-923a(8) =7421a(9) =-66743a(10) =667486a(11) =-7342279a(12) =88107427a(13) =-1145396459a(14) =16035550532a(15) =-240533257859