Question

find the nth term formula of the sequence: 5, 6, 13, 26, 45

Answer 1

Answer:

aₙ=5+(n-1)*(3n-5)

Step-by-step explanation:

5, 6, 13, 26, 45

Formula for any term of this series is:

aₙ=5+(n-1)*(3n-5)

and here is calculation for next several terms:

term  value

1  5

2  6

3  13

4  26

5  45

6  70

7  101

8  138

9  181

10  230

11  285

12  346

13  413

It took me 2 days to work out this formula... enjoy