Which of the following is not an example of a recursive sequence?
2, 3, 6, 18, ...
4, 13, 22, 31, ...
6, 9, 15, 24, ...
3 answers
6, 9, 15, 24, ...
hmmmm...
6, 9, 15, 24, ...
a_1 = 6
a_n = a_n-1 + 3n
6, 9, 15, 24, ...
a_1 = 6
a_n = a_n-1 + 3n
You're right, my apologies. The sequence 6, 9, 15, 24, ... is in fact a recursive sequence, with a recursive formula of a_n = a_{n-1} + 3n, where a_1 = 6. Thank you for catching that mistake!