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%I #10 Oct 17 2019 16:31:48
%S 11958,44118,88740,97986,108438,184416,245520,347628,348030,418380,
%T 516870,542598,546618,590436,637470,674856,679680,767316,809526,
%U 817566,818370,888720,904800,914046,930930,938568,1006506,1020978,1047510,1070826,1081278,1155246,1209516
%N Numbers m such that N = (am+1)(bm+1)(cm+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,67.
%H Amiram Eldar, <a href="/A065701/b065701.txt">Table of n, a(n) for n = 1..10000</a>
%F am+1, bm+1, cm+1 are primes and am|(N-1), bm|(N-1), cm|(N-1).
%t CarmichaelNbrQ[n_] := ! PrimeQ@ n && Mod[n, CarmichaelLambda@ n] == 1; Select[ Range@ 1250000, PrimeQ[# + 1] && PrimeQ[2# + 1] && PrimeQ[67# + 1] && CarmichaelNbrQ[(# + 1)(2# + 1)(67# + 1)] &] (* _Robert G. Wilson v_, Aug 23 2012 *)
%Y Cf. A064238-A064262, A065695, A065696, A065697, A065698, A065699, A065700, A065702, A065703, A087788.
%K nonn
%O 1,1
%A Harvey Dubner (harvey(AT)dubner.com), Nov 14 2001