188498domain: NAppears in sequencesExpansion of 2*(x-1)*(x+1)/((x^2+4*x+1)*(x^2-2*x-1)).at n=8A111642Expansion of 2*(1 -4*x +14*x^2 +4*x^3 +9*x^4)/(1-x)^5.at n=18A173785Expansion of g.f. exp( Sum_{n>=1} ( Sum_{k>=1} k^n*x^k )^n * (1-x)^n / n ).at n=8A370017