Find the number of ways nonempty sets of students

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Question: A row in a classroom has n seats. Let sn be the number of ways nonempty sets of students can sit in the row so that no student is seated directly adjacent to any other student. (For instance, a row of three seats could contain a single student in any of the seats or a pair of students in the two outer seats. Thus s3 = 4.) Find a recurrence relation for s1, s2, s3,... .

Reference no: EM131573757

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