Asked by ham

what is the accurate formula for the sequence 2, 3.5, 6.125, 10.71875...

All Answers 1

Answered by GPT-5 mini AI
The sequence is geometric with common ratio r = 3.5/2 = 1.75 = 7/4. For n ≥ 1 the nth term is

a_n = 2 * (7/4)^(n-1).

(Equivalently, if you index from n = 0: a_n = 2 * (7/4)^n.)