The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A262054 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A262054

Euler pseudoprimes to base 7: composite integers such that abs(7^((n - 1)/2)) == 1 mod n.
(history; published version)

#32 by OEIS Server at Sun Aug 25 05:58:02 EDT 2019

LINKS

Amiram Eldar, <a href="/A262054/b262054_1.txt">Table of n, a(n) for n = 1..10000</a> (terms 1..61 from Daniel Lignon)

#31 by Michel Marcus at Sun Aug 25 05:58:02 EDT 2019

STATUS

reviewed

approved

Discussion

Sun Aug 25

05:58

OEIS Server: Installed new b-file as b262054.txt.  Old b-file is now b262054_1.txt.

#30 by Joerg Arndt at Sun Aug 25 05:50:32 EDT 2019

STATUS

proposed

reviewed

#29 by Amiram Eldar at Sun Aug 25 05:38:15 EDT 2019

STATUS

editing

proposed

#28 by Amiram Eldar at Sun Aug 25 04:38:29 EDT 2019

LINKS

Amiram Eldar, <a href="/A262054/b262054_1.txt">Table of n, a(n) for n = 1..10000</a> (terms 1..61 from Daniel Lignon)

#27 by Amiram Eldar at Sun Aug 25 04:37:14 EDT 2019

LINKS

Daniel Lignon, Amiram Eldar, <a href="/A262054/b262054_1.txt">Table of n, a(n) for n = 1..6110000</a>

STATUS

approved

editing

#26 by Bruno Berselli at Mon Oct 12 09:35:02 EDT 2015

STATUS

reviewed

approved

#25 by Michel Marcus at Mon Oct 12 04:42:34 EDT 2015

STATUS

proposed

reviewed

#24 by Altug Alkan at Mon Oct 12 04:34:08 EDT 2015

STATUS

editing

proposed

#23 by Altug Alkan at Mon Oct 12 04:33:48 EDT 2015

PROG

(PARI) for(n=1, 1e5, if ( Mod(7^n % , (2*n+1) )^n == 1 || Mod(7^n % , (2*n+1) )^n == 2*n && bigomega(2*n+1) != 1 , print1(2*n+1", "))); \\ Altug Alkan, Oct 01 11 2015

STATUS

proposed

editing