The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A050522

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A050522

Primes of form 5*2^n-1.
(history; published version)

#24 by Michel Marcus at Wed Feb 21 02:19:12 EST 2024

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reviewed

approved

#23 by Joerg Arndt at Wed Feb 21 01:19:50 EST 2024

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proposed

reviewed

#22 by Max Alekseyev at Tue Feb 20 20:37:57 EST 2024

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editing

proposed

#21 by Max Alekseyev at Tue Feb 20 20:37:54 EST 2024

FORMULA

a(n) = 5*2^A001770(n) - 1. - Max Alekseyev, Feb 20 2024

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approved

editing

#20 by Wesley Ivan Hurt at Sat Feb 04 06:21:11 EST 2017

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proposed

approved

#19 by Michel Marcus at Sat Feb 04 06:19:30 EST 2017

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editing

proposed

#18 by Michel Marcus at Sat Feb 04 06:16:51 EST 2017

LINKS

Heiko Harborth, <a href="http://ami.ektf.hu/uploads/papers/finalpdf/AMI_41_from57to62.pdf">On h-perfect numbers</a>, Annales Mathematicae et Informaticae, 41 (2013) pp. 57-62; .

MATHEMATICA

Select[Table[5*2^n-1, {n, 0, 150}], PrimeQ] (* _Jean-François Alcover _, Mar 21 2011 *)

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approved

editing

#17 by Peter Luschny at Sun Jun 22 16:35:26 EDT 2014

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reviewed

approved

#16 by Joerg Arndt at Sun Jun 22 09:29:53 EDT 2014

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proposed

reviewed

#15 by Michel Marcus at Sun Jun 22 08:12:43 EDT 2014

STATUS

editing

proposed