Answer: 210

Step-by-step explanation:

A1=n*(n+1)*(n+2) take n=0

A2=n*(n+1)*(n+2) take n=1

A3=n*(n+1)*(n+2) take n=2

A4=n*(n+1)*(n+2) take n=3

A5=n*(n+1)*(n+2) take n=4

A6=n*(n+1)*(n+2) take n=5

A7=n*(n+1)*(n+2) take n=6

So, 0, 6, 24, 60, 120, 210, 336