login
This site is supported by donations to The OEIS Foundation.

 

Logo

Annual Appeal: Today, Nov 11 2014, is the 4th anniversary of the launch of the new OEIS web site. 70,000 sequences have been added in these four years, all edited by volunteers. Please make a donation (tax deductible in the US) to help keep the OEIS running.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A130443 Even pseudoprimes to base 43. 13
6, 14, 42, 526974, 9157582, 21001206, 49419154, 156418318, 157058362, 223741702, 467016562, 531330346, 601692022, 681377698, 888739174, 931053466, 1037629198, 1390950926, 1392718618, 2175608494, 2377982166, 3045063946, 5136468646 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Robert G. Wilson v, Table of n, a(n) for n = 0..46.

Eric Weisstein's World of Mathematics, Fermat Pseudoprime.

Index entries for sequences related to pseudoprimes

MATHEMATICA

lst = {}; Do[ If[ PowerMod[43, 2n - 1, 2n] == 1, AppendTo[lst, 2n]], {n, 2, 1800000000}]; lst - Robert G. Wilson v, Jun 01 2007

CROSSREFS

Cf. A020171, A006935, A130433, A090082, A090083, A090084, A090085, A130434, A130435, A130436, A130437, A130438, A130439, A130440, A130441, A130442.

Sequence in context: A184393 A015892 A093369 * A005515 A114705 A200187

Adjacent sequences:  A130440 A130441 A130442 * A130444 A130445 A130446

KEYWORD

nonn

AUTHOR

Alexander Adamchuk, May 26 2007, Jun 20 2007

EXTENSIONS

More terms from Robert G. Wilson v, Jun 01 2007

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified November 22 06:18 EST 2014. Contains 249804 sequences.