PHP Version I came up with. Took more than 10 minutes tho... for ($i=0; $i<=10; $i++) { if ($i== 0) $row[$i] = array(0, 1, 0); else { $row[$i] = array(); array_push($row[$i], 0); for($j = 0; $j<count($row[$i-1]); $j++) { $someval = $row[$i-1][$j]+$row[$i-1][$j+1]; array_push($row[$i], $someval); } } for($k = 1; $k<count($row[$i])-1; $k++) { echo $row[$i][$k]; } echo "<br />"; }