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A221794
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Number of primes of the form (x+1)^3 - x^3 with x <= 10^n.
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5
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OFFSET
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0,2
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COMMENTS
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Cuban primes are primes that are the difference of two consecutive cubes, p = (x+1)^3 - x^3 (A002407). They are also primes of the form 3k(k+1) + 1, where values for k+1 are in A002504.
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LINKS
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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