1, 4, 7, 10, 13
3, 5, 7, 9, 11
7, 14, 21, 28, 35
3, 5, 9, 17, 33
5, 10, 15, 20, 25
11, 22, 33, 44, 55
0.5, 1.0, 1.5, 2.0, 2.5
6, 13, 20, 27, 34
3, 6, 9, 12, 15
1.0, 1.5, 2.0, 2.5, 3.0
(2^n) +1
3n
5n
7n -1
7n
0.5n
(n+1) / 2
2n +1
11n
3n -2
