These are the first six terms of a sequence with a1=3 and a2=1:
3, 1, 8, 18, 52, 140, …
...
![Mathematics](/tpl/images/cats/mat.png)
Mathematics, 06.03.2020 23:06, alexanderavrett
These are the first six terms of a sequence with a1=3 and a2=1:
3, 1, 8, 18, 52, 140, …
Find a recursive formula for this sequence that is valid for n>2.
Write your answer in the simplest form.
![answer](/tpl/images/cats/otvet.png)
Answers: 2
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