E.g.f. exp(tan(x)*log(1+x)).

Terms

a(0) =1a(1) =0a(2) =2a(3) =-3a(4) =28a(5) =-110a(6) =1010a(7) =-6636a(8) =67856a(9) =-618120a(10) =7231048a(11) =-82977400a(12) =1111357256a(13) =-15222508080a(14) =231587495568