99498527400domain: NAppears in sequencesList of coprime pairs (x,y) such that x^2+y^2 = 13^n with 0<x<y.at n=41A158936Values of y such that x^2 + y^2 = 13^n with x and y coprime and 0 < x < y.at n=20A188949Even numbers x such that x^2 + y^2 = 13^n with x and y coprime.at n=20A188982