Can any one explain the program to generate sequence of numbers(Line sequence & triangle sequence)the following clearly ?

Question

output:
line sequence : -3 4 -6 10 -18 34 -66 130 -258 514 -1024
and
traingle seq:
1
2 2
3 3 3
4 4 4 4
5 5 5 5 5
6 6 6 6 6 6
7 7 7 7 7 7 7
8 8 8 8 8 8 8 8
9 9 9 9 9 9 9 9 9

Answer 1

please give the code also as there are many ways to do it

Answer 2

using for loop and other control statements..,