Expansion of e.g.f. cosh(sqrt(3) * (exp(x) - 1)).

Terms

a(0) =1a(1) =0a(2) =3a(3) =9a(4) =30a(5) =135a(6) =705a(7) =3906a(8) =22953a(9) =145053a(10) =985800a(11) =7136613a(12) =54544485a(13) =437961888a(14) =3685605735a(15) =32441696325a(16) =297977767662