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I currently don't have my notebook so I can't post the rules I tested with the results.  However, in my search to find rules that are interesting, I began to ponder what indeed made one rule more interesting than another.  At first I classified interesting rules as those that produced designs with triangular patterns. However, many rules I tested began producing these similar patterns.  For me, this made the rules that produced these triangular patters less interesting.  After testing numerous rules, the one rule I tested that was unlike all others I felt at the end was most interesting (the particular rule produced nothing similar to the first rule).  When I get my notebook, I'll discuss particular rules....