Question 1059119
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Trying to describe number pattern.  The pattern is 75,74,72,69,65. 
I know the differences are 1,2,3 and 4. 
Would that be the best way to describe this? 
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You just determined almost everything.


You need only to write this formula


{{{a[1]}}} = 75,


{{{a[n+1]}}} = {{{a[n]-n}}} for n = 1, 2, 3, . . .