Using sequence in Segments

Hi, I want to create a segment to see the visitors who:

Visit 1: saw page xyz/a.html

Visit 2: were on the website but did not see xyz/a.html

Visit 3: saw page xyz/a.html

Visit 4: saw page xyz/a.html

If I use the visit container in the segment builder, does the sequence defines Visit number with every condition/criteria:

{Container = Visit

     { Page URL equals xyz/a.html

          then

       Page URL does not equal xyz/a.html

          then

       Page URL equals xyz/a.html

          then

       Page URL equals xyz/a.html

     }

}

Is this a correct way to do it?