Leo.php

<?php
    $numero = rand(1,20); // Entre com seu numero aqui
?>
<table border=1>
    <tr>
        <th>
            Decimal
        </th>
        <th>
            Hexadecimal
        </th>
        <th>
            Octal
        </th>
        <th>
            Binary
        </th>
    </tr>
    <script>
        var content = "" 
        for (var i = 0; i <= <?= $numero ?> ; i++) {
            content += "<TR>" 
            content += "<TD>" + i.toString(10) + "</TD>" 
            content += "<TD>" + i.toString(16) + "</TD>" 
            content += "<TD>" + i.toString(8) + "</TD>" 
            content += "<TD>" + i.toString(2) + "</TD></TR>" 
        }
        document.write(content)
    </script>
</table>