Start with 7
1st term: 7
2nd term: Multiply 7 by 2, get 14, add 2, get 16
3rd term: 8
3th term: Multiply 8 by 3, get 24, add 3, get 27
5th term: 9
6th term: Multiply 9 by 4, get 36, add 4, get 40
7th term: 10
8th term: Multiply 10 by 5, get 50, add 5, get 55
9th term: 11
10th term: Multiply 11 by 6, get 66, add 6, get 72
11th term: 7
12th term: Multiply 12 by 7, get 84, add 7, get 91
etc.
Edwin