load(draw);

draw(

terminal  = 'animated_gif, 

file_name  = "/..Pfad.../Dateiname"

dimensions=[300,300],

delay = 100,

     makelist(gr2d(

       explicit(x^k,x,-1,1),

yrange = [-1,1],

label([string(x^k),0,-0.5])

),k,20)

);