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Search: id:A139289
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| A139289 |
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(2^(2p - 1)/2)-1, where p is prime. |
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+0
8
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| 3, 15, 255, 4095, 1048575, 16777215, 4294967295, 68719476735, 17592186044415, 72057594037927935, 1152921504606846975
(list; graph; listen)
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OFFSET
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1,1
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LINKS
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Floris P. van Doorn and Jasper Mulder, Table of n, a(n) for n=1,...,260.
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FORMULA
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a(n)=(A139286(n)/2)-1.
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MATHEMATICA
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Table[(2^(2 Prime[p] - 1)/2) - 1, {p, 1, 20}] [From Floris P. van Doorn and Jasper Mulder (florisvandoorn(AT)hotmail.com), Oct 12 2009]
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CROSSREFS
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Cf. A139286, A139287, A139288, A139290, A139291, A139292, A139293, A139294, A139306.
Sequence in context: A126455 A136466 A114735 this_sequence A116518 A050474 A051179
Adjacent sequences: A139286 A139287 A139288 this_sequence A139290 A139291 A139292
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KEYWORD
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more,nonn
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AUTHOR
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Omar E. Pol (info(AT)polprimos.com), Apr 13 2008
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EXTENSIONS
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More terms from Floris P. van Doorn and Jasper Mulder (florisvandoorn(AT)hotmail.com), Oct 12 2009
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