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%I #13 Mar 07 2024 08:50:41
%S 6,14,42,526974,9157582,21001206,49419154,156418318,157058362,
%T 223741702,467016562,531330346,601692022,681377698,888739174,
%U 931053466,1037629198,1390950926,1392718618,2175608494,2377982166,3045063946,5136468646
%N Even pseudoprimes to base 43.
%H Robert G. Wilson v, <a href="/A130443/b130443.txt">Table of n, a(n) for n = 1..46</a>
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/FermatPseudoprime.html">Fermat Pseudoprime</a>.
%H <a href="/index/Ps#pseudoprimes">Index entries for sequences related to pseudoprimes</a>
%t lst = {}; Do[ If[ PowerMod[43, 2n - 1, 2n] == 1, AppendTo[lst, 2n]], {n, 2, 1800000000}]; lst (* _Robert G. Wilson v_, Jun 01 2007 *)
%Y Cf. A020171, A006935, A130433, A090082, A090083, A090084, A090085, A130434, A130435, A130436, A130437, A130438, A130439, A130440, A130441, A130442.
%K nonn
%O 1,1
%A _Alexander Adamchuk_, May 26 2007, Jun 20 2007
%E More terms from _Robert G. Wilson v_, Jun 01 2007
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