Expansion of e.g.f. tanh(arctan(x) * exp(x)).

Terms

a(0) =0a(1) =1a(2) =2a(3) =-1a(4) =-28a(5) =-115a(6) =230a(7) =7051a(8) =43080a(9) =-172327a(10) =-6067382a(11) =-47080361a(12) =309697324a(13) =12289126629a(14) =114505019694