177153domain: NAppears in sequencesNumbers that are the sum of 9 positive 10th powers.at n=27A004809Numbers that are the sum of 7 positive 11th powers.at n=8A004818Numbers k such that phi(k) | sigma_10(k).at n=33A015768Expansion of -(4*x*sqrt(4*x^2+1)+8*x^2+1)/((2*x^2-1)*sqrt(4*x^2+1) +4*x^3+x).at n=14A249513