-7554900397domain: ZAppears in sequencesLet sum(k>=0, k^n/(2*k+1)!) = (x(n)*e + y(n)/e)/z(n), where x(n) and z(n) are >0, then a(n)=y(n).at n=20A080094E.g.f.: exp(-exp(-x)+1+x).at n=21A109747