7n – 2
6, 9, 12, 15, 18...
2n + 1
5, 12, 19, 26, 33
5n + 4
n + 1
8n + 3
2, 3, 4, 5, 6...
3, 5, 7, 9, 11...
9, 14, 19, 24, 29...
11, 19, 27, 35,, 43
3(n + 1)
