Expansion of e.g.f. log(1+x)/cos(tanh(x)).

Terms

a(0) =0a(1) =1a(2) =-1a(3) =5a(4) =-12a(5) =29a(6) =-165a(7) =993a(8) =-7056a(9) =62649a(10) =-540225a(11) =5044445a(12) =-56372844a(13) =685980437a(14) =-8868937077a(15) =124034330553