n-th derivative of cosh(x)^tan(x) at x=0.

Terms

a(0) =1a(1) =0a(2) =0a(3) =3a(4) =0a(5) =10a(6) =90a(7) =308a(8) =1680a(9) =13560a(10) =123480a(11) =788568a(12) =7646760a(13) =76432720a(14) =841320480a(15) =8436217208a(16) =103473901440