71006domain: NAppears in sequencesExpansion of (x-5*x^2+11*x^3-12*x^4+7*x^5-2*x^6+x^7) / (1-6*x+15*x^2-20*x^3+15*x^4-6*x^5+x^6).at n=27A221948Expansion of Product_{k>=1} 1/(1 - (3*k-2)*x^(3*k-2)).at n=29A265821