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A090874
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a(n) is the smallest number m such that m^2^k + (m+1)^2^k is prime for k=0,1,...,n.
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2
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OFFSET
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0,6
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COMMENTS
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The first five terms of this sequence correspond to Fermat primes.
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LINKS
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Table of n, a(n) for n=0..5.
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EXAMPLE
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a(5)=1806390369 because 1806390369 is the smallest number m such that
m^2^k+(m+1)^2^k is prime for k=0,1,2,3,4 and 5.
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CROSSREFS
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Cf. A090872, A090873, A019434, A000215.
Sequence in context: A198177 A129616 A105006 * A071371 A052094 A015429
Adjacent sequences: A090871 A090872 A090873 * A090875 A090876 A090877
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KEYWORD
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nonn
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AUTHOR
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Farideh Firoozbakht, Feb 06 2004
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STATUS
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approved
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