Respuesta :

You are multiplying 3 each time.

23 x 3 = 69

69 x 3 = 207

207 x 3 = 621 

621 is the 4th term

621 x 3 = 1863

1863 x 3 = 5589

5589 x 3 = 16767


16767 is your 7th term in this sequence

hope this helps