Analogue-sequencer

Hi all,

I was wondering if steps can be set to skip using an accumulator or if 
there is any way of achieving this effect.

What I wasn to do is have a 16 note sequence that expands and 
contracts in length randomly. I know that this could be done using 
the 'last step' feature but I'm being difficult and want the steps to 
disappear from random places. 

Any ideas appreciated !

Cheers

Simon