SLM's suggestion is probably the easiest way:
code:
<html>
<head>
<title></title>
</head>
<body>
<script type="text/javascript">
var i=1;
for (i=1; i<=10; i++)
{
document.write("<a href=\"http://www.yourwebsite.com/number" + i + "\">URL" + i + "</a><br>")
}
</script>
</body>
</html>
though google could have told you that, too...
edit: meh too slow