I came up with an awesome math/logic problem stoned.

[Az.]

i dont know if ive done it right but
1) can the grandchildren (2nd generation of children) have children with the original parents?

2)I dont think they would die out....because they would be creating new families....or somthing?? lol

3)36

4)72

5) i suck at math....but thanks for getting my brain a little active