Originally Posted by
Salsa So basically I've got this set of numbers and I've found the pattern but i can't figure out how to into a formula. It's kinda important because it's part of my coursework, which really needs to be posted in the next few days.
So here be the numbers
3,12,30,60,105,168,252
1st set of differences:
9,18,30,45,63,84
2end set of differences:
9,12,15,18,21,24
3erd set of differences:
3,3,3,3,3
I think it's something to do with n^3 but I really can't figure it out.
Help please?