<cfscript>

times = 0;

function recurse( source ) {

    out = [source];

    if(times > 0) {
        times--;
        arrayAppend(out, recurse(out));
    }


    return out;
};

source = [1];
start = getTickCount();
result = recurse(source);
end = getTickCount();

</cfscript>

<cfdump var="#result#" />
<cfdump var="#end-start# ms" />