G.f.: exp(x) = Product_{n>=1} [1 + a(2n-1)*x^(2n-1)/(2n-1)! + a(2n)*x^(2n)/(2n)! ].

A137941

G.f.: exp(x) = Product_{n>=1} [1 + a(2n-1)*x^(2n-1)/(2n-1)! + a(2n)*x^(2n)/(2n)! ].

Terms

    a(0) =1a(1) =1a(2) =1a(3) =-3a(4) =6a(5) =10a(6) =-195a(7) =945a(8) =-3080a(9) =17136a(10) =37170a(11) =-796950a(12) =3880800a(13) =122007600a(14) =-2380685307a(15) =18531377865a(16) =-136619683200a(17) =942469528000a(18) =723819456360

External references