Expansion of e.g.f. sinh(log(1+tan(x))).

Terms

a(0) =0a(1) =1a(2) =-1a(3) =5a(4) =-20a(5) =136a(6) =-976a(7) =8840a(8) =-88640a(9) =1019776a(10) =-12933376a(11) =181318400a(12) =-2767631360a(13) =45821372416a(14) =-816582578176