Question 671636
What is the pattern in the numbers 1,4,10,20,35,56,84? I have tried to multiply numerous number but, I alas can't get it. 
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I ran a Cubic Regression Program on the data and got
the following equation:
y = (15/90)x^3 + (1/2)x^2 : (1/3)x
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I would not expect you could ever do that manually.
Cheers,
Stan H.