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A062598
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Numbers k such that 32^k - 31^k is prime.
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0
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OFFSET
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1,1
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COMMENTS
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Terms > 1000 often correspond only to strong pseudoprimes.
a(5) > 10^5. - Robert Price, Oct 03 2012
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LINKS
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Table of n, a(n) for n=1..4.
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PROG
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(PARI) is(n)=ispseudoprime(32^n-31^n) \\ Charles R Greathouse IV, Jun 13 2017
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CROSSREFS
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Cf. A000043, A057468, A059801, A059802, A062572-A062666.
Sequence in context: A096725 A332536 A172920 * A203690 A304425 A316280
Adjacent sequences: A062595 A062596 A062597 * A062599 A062600 A062601
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KEYWORD
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nonn,hard
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AUTHOR
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Mike Oakes, May 18 2001, May 19 2001
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EXTENSIONS
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a(4) from Robert Price, Oct 03 2012
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STATUS
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approved
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