Expansion of e.g.f. exp(x)^( cos(x) + sin(x) ).

Terms

a(0) =1a(1) =1a(2) =3a(3) =4a(4) =9a(5) =-24a(6) =-143a(7) =-902a(8) =-1631a(9) =5176a(10) =109841a(11) =664302a(12) =1479841a(13) =-16079764a(14) =-240229975a(15) =-1395162974a(16) =126628545a(17) =101950486736