Expansion of e.g.f. arcsinh(sec(x) * log(x+1)).

Terms

a(0) =0a(1) =1a(2) =-1a(3) =4a(4) =-6a(5) =13a(6) =75a(7) =-688a(8) =3444a(9) =17701a(10) =-627165a(11) =8927708a(12) =-77106810a(13) =67688905a(14) =13345186855a(15) =-307791747352