pic1

import geometry;

size(9cm,0);
defaultpen(fontsize(12pt));
dotfactor = 4;

for(int i=0; i<5; ++i){
  for(int j=0; j<1; ++j)
  {
    label("$k=$" + +string(i+1), (j,-i));
  }
}

addMargins(1mm,1mm);