[рони]

Vor_tex,

<script>
  function a(n,x)
  {

     for (var i = 0; i< n; ){
        x = x * 1.3 + 300 * ++i;
     }
     return  x

  } ;
for (var i=0; i<10; i++)  {document.write(i + " = " +a(i,100)+ "<br>")}
  </script>