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A145309
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Numbers x such that there exists n in N : (x+1)^3-x^3=79*n^2.
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2
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OFFSET
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1,1
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LINKS
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FORMULA
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a(n) = 456302*a(n-1) - a(n-2) + 228150.
G.f.: x*(98*x^2-228151*x-97)/((x-1)*(x^2-456302*x+1)). - Colin Barker, Aug 24 2012
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EXAMPLE
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a(1)=97 because the first relation is : 98^3-97^3=79*19^2.
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CROSSREFS
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KEYWORD
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easy,nonn
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AUTHOR
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STATUS
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approved
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