Question

Find the first five terms of the given recursively defined sequence
a_n=a_(n-1)+a_(n-2)+a_(n-3)
and a_1=a_2=a_3=1

Answer 1

@rvc help please!! It's due today and I completely forgot about it :/

Answer 2

You already have the first 3. The recursive formula is saying that each term is the sum of the 3 previous terms.

a4 = a1 + a2 + a3

Answer 3

so it's a_4=3 ?

Answer 4

right

Answer 5

so then i'd find a_5, a_6 and a_7?

Answer 6

I think you only need a5 because a6 is the 6th term and a7 is the 7th

Answer 7

hm ok.

Answer 8

and a_5 would be 5?

Answer 9

yes

Answer 10

Good job @peachpi :)

Answer 11

thank you @rvc

Answer 12

thanks so much!

Answer 13

Thank you