Does yet existing distributions following differents serial ? (functions, plugin or nodes)
For place objects with less regularity
0 1 2 3 5 7 11 13 ...
0 1 2 3 5 8 13...
0 1 2 4 8 16 32...
0 1 2 3 6 18 108...
etc...

There is this but... http://moi3d.com/forum/messages.php?webtag=MOI&msg=8503.1