2) t_{1} = 3; t_{n} = 2t_{n-1} - 1
3) t_{1} = 7; t_{n} = 3t_{n-1} + n
5) 1, 4, 13, 40, 121, . . .
6) 1, 3, 6, 10, 15, 21, . . .
2) Multiply preceding
term by 2
and add 1. That gives us:
3, 5, 9,
17, 34
3) Multiply the
preceding term by
3 and add the current term number.
7, 23, 72,
220, 665
See the pattern! Multiply the preceding term by 3 and add 1!! Cool!