my bad 2^(n-1)... On Aug 17, 2:17 pm, Vijay Kansal <vijaykans...@gmail.com> wrote: > @nitin it must be 2^n i think > > On Aug 17, 3:48 am, Bharat Kul Ratan <bharat.kra...@gmail.com> wrote: > > > > > > > > > It might be > > useful:http://www.artofproblemsolving.com/Wiki/index.php/Partition_%28combin...
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