SOLUTION: I have an input output table and the inputs are 1,2,3,4 and the outputs are 24,23,21,19 and i need to find the nth term

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Question 892633: I have an input output table and the inputs are 1,2,3,4 and the outputs are 24,23,21,19 and i need to find the nth term
Answer by Edwin McCravy(20063) About Me  (Show Source):
You can put this solution on YOUR website!
What's the rule or pattern for getting the next term?
This?:
24
24-1 = 23
23-2 = 21
21-2 = 19
then what? Do the subtractions go 1,2,2,3,3,3,4,4,4,4, etc?
19-3 = 16
16-3 = 13
13-3 = 10
10-4 = 6
6-4 = 2
But we quit there or else go negative.
Or is it this:
24
24-1 = 23
23-2 = 21
21-2 = 19
then what? Do the subtractions go 1,2,2,1,2,2,1,2,2,1,2,2,1, etc?
19-1 = 18
18-2 = 16
16-2 = 14
14-1 = 13
13-2 = 11
11-2 = 9
9-1 = 8
8-2 = 6
6-2 = 4
4-1 = 3
3-2 = 1
Have to quit there, or else go negative.
What's the pattern, the rule for getting the next term?
We can't get the nth term without knowing the rule. And
as you see there are more than one possible pattern or
rule.
Edwin