Fibonacci (english)

<script type="text/javascript">

var first = 0, second = 1, temporary = 0, number_seq = 15, omit_0 = false;

if( omit_0) first = 1;
if( number_seq > 0) document.write( first);
if( number_seq > 1) document.write( " / " + second);

for ( var iterator = 0; iterator < number_seq - 2; iterator++) {
    temporary = second;
    second += first;
    first = temporary;
    document.write( " / " + second);
}

</script>