Expansion of e.g.f.: exp(tanh(arcsin(x)))=1+x+1/2!*x^2-3/4!*x^4-4/5!*x^5+21/6!*x^6...

A012255

Expansion of e.g.f.: exp(tanh(arcsin(x)))=1+x+1/2!*x^2-3/4!*x^4-4/5!*x^5+21/6!*x^6...

Terms

    a(0) =1a(1) =1a(2) =1a(3) =0a(4) =-3a(5) =-4a(6) =21a(7) =136a(8) =185a(9) =272a(10) =9641a(11) =222016a(12) =1668021a(13) =21267520a(14) =192801597a(15) =3836913536a(16) =42064398961a(17) =874251520256

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