157212domain: NAppears in sequencesz-value of the solution (x,y,z) to 5/n = 1/x + 1/y + 1/z satisfying 0 < x < y < z and having the largest z-value. The x and y components are in A075249 and A075250.at n=41A075251Series expansion for mean-squared radius of gyration of directed and convex polygons on square lattice.at n=6A121778