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Write a recursive definition for the sequence 21,16,11,6

User Sreedhar S
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A recursive definition for the sequence shown above can be x = n-5.
21 - 5 = 16
16 - 5 = 11
11 - 5 = 6
and so on...

The number sequence has a difference of 5 in each of the values before and after them.
User Naixx
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