0, 6, 16, 30, 48, 70, . .
Chapter 9, Problem 58(choose chapter or problem)
0, 6, 16, 30, 48, 70, . . .
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer