Denominators of Taylor series for exp(x)*cos(x).

Terms

a(0) =1a(1) =1a(2) =1a(3) =3a(4) =6a(5) =30a(6) =1a(7) =630a(8) =2520a(9) =22680a(10) =1a(11) =1247400a(12) =7484400a(13) =97297200a(14) =1a(15) =10216206000a(16) =81729648000a(18) =1a(22) =1