485257533003domain: NAppears in sequencesReal part of (3 + 2i)^n.at n=21A121622List of coprime pairs (x,y) such that x^2+y^2 = 13^n with 0<x<y.at n=43A158936Values of y such that x^2 + y^2 = 13^n with x and y coprime and 0 < x < y.at n=21A188949Odd numbers y such that x^2 + y^2 = 13^n with x and y coprime.at n=21A188983