Expansion of e.g.f. cosh(x)^exp(x).

Terms

a(0) =1a(1) =0a(2) =1a(3) =3a(4) =7a(5) =30a(6) =166a(7) =798a(8) =4117a(9) =27660a(10) =196756a(11) =1328448a(12) =9866407a(13) =86205210a(14) =759842266a(15) =6460661028a(16) =60841732777a(17) =651349676280