Expansion of e.g.f. cosh(exp(x)-1).

Terms

a(0) =1a(1) =0a(2) =1a(3) =3a(4) =8a(5) =25a(6) =97a(7) =434a(8) =2095a(9) =10707a(10) =58194a(11) =338195a(12) =2097933a(13) =13796952a(14) =95504749a(15) =692462671a(16) =5245040408a(17) =41436754261a(18) =340899165549