What are the first five terms, a1, a2, a3, a4, a5, of the sequence defined by a subscript n baseline = startfraction n (n squared + 1) over n + 2 endfraction, and how can the sequence be described? 1, five-halves, startfraction 21 over 5 endfraction, 6, startfraction 55 over 7 endfraction; diverges two-thirds, five-halves, 6, startfraction 34 over 3 endfraction, startfraction 130 over 7 endfraction; diverges 1, five-halves, startfraction 21 over 5 endfraction, 6, startfraction 55 over 7 endfraction; converges to a limit of 1 two-thirds, five-halves, 6, startfraction 34 over 3 endfraction, startfraction 130 over 7 endfraction; converges to a limit of 1