6325225domain: NAppears in sequencesG.f.: (108*x^2+27*x+1)/(1+2*x-6*x^2-27*x^3).at n=13A103645Squares which can be represented as sum of a prime and its reverse in at least one way.at n=7A227525Squares of the form k + reverse(k) for at least one k.at n=25A358880