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

Terms

a(0) =1a(1) =0a(2) =0a(3) =3a(4) =0a(5) =-30a(6) =90a(7) =588a(8) =-5040a(9) =-11400a(10) =325080a(11) =-336072a(12) =-25237080a(13) =126955920a(14) =2273150880a(15) =-25210740552a(16) =-217110741120