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Search: id:A140383
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| A140383 |
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Prime triplets of the form p, 2^p -1, 2^(2^p)+1 derived from a single prime p. |
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1
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OFFSET
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1,1
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COMMENT
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List is probably complete (see comments in A000215, A019434).
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EXAMPLE
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(2,3,17) is a triple of 3 primes 2, 2^2-1, 2^4+1.
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CROSSREFS
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Cf. A000040, A000043, A000668, A000215.
Sequence in context: A057997 A005273 A103898 this_sequence A029913 A029914 A073125
Adjacent sequences: A140380 A140381 A140382 this_sequence A140384 A140385 A140386
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KEYWORD
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nonn,less
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AUTHOR
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Juri-Stepan Gerasimov (2stepan(AT)rambler.ru), Jun 14 2008
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EXTENSIONS
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Edited by R. J. Mathar, Jun 16 2008
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