-5676domain: ZAppears in sequencesExpansion of Product_{m>=1} ((1+q^(2*m-1))/(1+q^(2*m)))^6.at n=19A029843a(0)=0, a(1)=1, a(n)=((2*n-1)*a(n-1)-5*n*a(n-2))/(n-1).at n=11A102840G.f.: Product_{m>0} 1/(1 - x^m + 2!*x^(2*m)).at n=30A293294