<html>
<body>
0) 0 x 0 = 0<br/>
1) 1 x 1 = 1<br/>
2) 2 x 3 = 6<br/>
</body>
<script type="text/javascript">
var limit = parseInt(prompt("Jusque quelle itération ?"))-2;
var arr = [[1,1],[2,3]];
for (var i = 1; i <= limit; i++)
{
var a = arr[i][0]*2+arr[i-1][0];
var b = arr[i][1]*2+arr[i-1][1];
arr.push([a,b]);
document.body.innerHTML += (i+2)+") "+a+" x "+b+" = "+a*b+"<br/>"
}
</script>
</html>