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value ((5-sqrt(65))/2)^n*(1/2-9/2/sqrt(65))+ ((5+sqrt(65))/2)^n*(1/2+9/2/sqrt(65)), n=0 to 4
value ((5-sqrt(65))/2)^n*(1/2-9/2/sqrt(65))+ ((5+sqrt(65))/2)^n*(1/2+9/2/sqrt(65)), n=0 to 4
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