http://qs321.pair.com?node_id=1150068


in reply to Re: Combinatorics problem. (Updated with more info.)
in thread Combinatorics problem. (Updated with more info.)

++ oiskuu i suspected that the answer had to be in the triangle.. congrats!

L*
There are no rules, there are no thumbs..
Reinvent the wheel, then learn The Wheel; may be one day you reinvent one of THE WHEELS.