Answer:
The first 5 terms of the sequence is 2,7,15,26,40.
Step-by-step explanation:
Given : Consider the sequence defined recursively by

To find : Write out the first 5 terms of this sequence ?
Solution :
and
The first five terms in the sequence is at n=1,2,3,4,5
For n=1,




For n=2,




For n=3,




For n=4,




For n=5,




The first 5 terms of the sequence is 2,7,15,26,40.