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Search: id:A071380
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A071380 Numbers n such that (26^n+1)/27 is a prime. +0
3
11, 109, 227, 277, 347, 857, 2297, 9043 (list; graph; listen)
OFFSET

1,1

COMMENT

Some of the larger terms may only correspond to probable primes.

LINKS

H. Dubner and T. Granlund, Primes of the Form (b^n+1)/(b+1), J. Integer Sequences, 3 (2000), #P00.2.7.

CROSSREFS

Cf. A057191, A071381.

Adjacent sequences: A071377 A071378 A071379 this_sequence A071381 A071382 A071383

Sequence in context: A140617 A001721 A080158 this_sequence A142423 A125423 A048346

KEYWORD

nonn

AUTHOR

Rick L. Shepherd (rshepherd2(AT)hotmail.com), May 22 2002

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Last modified October 12 13:44 EDT 2008. Contains 144830 sequences.


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