[рони]

Vor_tex,

<script>
  function a(n,x,k)
  {
     x = x * 1.3 + 300 * ++k;
     n--;
     return  n <= 1 ? x : a(n,x,k)

  } ;
for (var i=2; i<10; i++)  {document.write(i + " = " +a(i,100,0 )+ "<br>")}
  </script>