The recursive rule for the sequence below is an=an-1-an-2an=an-1-an-2 2, 3, 6, 18

Question

I need to know if the sequenc of umbers matches

Answer 1

a₁ = 2

a₂ = 3

 

a_n = a_n-1 * a_n-2

 

2, 3, 6, 18

 

O.K., let's find:

  a₁ = 2       [given]

  a₂ = 3       [given]

  a₃ = a₂ * a₁ = 3 * 2 = 6    [check]

  a₄ = a₃ * a₂ = 6 * 3 = 18   [check]

 

Yep, they match  (note: I used '*' and interpreted the problem statement).