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%I #9 Jul 24 2018 09:42:56
%S 0,1,2,2,8,80,512,3992,47168,588800,7903232,124255232,2161507328,
%T 40505429120,829919658752,18433385276672,438231826239488,
%U 11136829247959040,301669044409475072,8662857659856269312
%N Expansion of e.g.f. arcsin(tanh(x) * exp(x)).
%e x + 2/2!*x^2 + 2/3!*x^3 + 8/4!*x^4 + 80/5!*x^5 ...
%p seq(coeff(series(factorial(n)*arcsin(tanh(x)*exp(x)), x,n+1),x,n),n=0..20); # _Muniru A Asiru_, Jul 24 2018
%K nonn
%O 0,3
%A Patrick Demichel (patrick.demichel(AT)hp.com)
%E a(0) inserted and title improved by _Sean A. Irvine_, Jul 23 2018
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