note JavaFan Such a home work assignment should immediately trigger the term 'recursion'. The best way to impress your teacher is: <code> perl -E'sub _{push@_,say@_;&_}_' </code> It even starts with <b>0</b> 1's, for extra credits. <p> If you want to golf, you might want to try <code> perl -E'{$_.=say;redo}' </code> 716367 716367