n-th derivative of sech(x)^sinh(x) at x=0.

Terms

a(0) =1a(1) =0a(2) =0a(3) =-3a(4) =0a(5) =0a(6) =90a(7) =-63a(8) =0a(9) =-6240a(10) =22680a(11) =-49203a(12) =376200a(13) =-7076160a(14) =60540480a(15) =57346377a(16) =39312000a(17) =-49503504960a(18) =276296898240