$$3, 7, 12, 18, 25, \ldots$$
This sequence appears in my son's math homework. The question is to find the $n$'th term. What is the formula and how do you derive it?
$$3, 7, 12, 18, 25, \ldots$$
This sequence appears in my son's math homework. The question is to find the $n$'th term. What is the formula and how do you derive it?