Expansion of e.g.f. exp(-x) / (1 - sinh(x)).

Terms

a(0) =1a(1) =0a(2) =1a(3) =3a(4) =13a(5) =75a(6) =511a(7) =4053a(8) =36793a(9) =375735a(10) =4262971a(11) =53203953a(12) =724379173a(13) =10684377795a(14) =169713810631