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 A064242 Values of m such that N=(am+1)(bm+1)(cm+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,11. 1
 378, 576, 1236, 3018, 7506, 9090, 18396, 26250, 27966, 28098, 28428, 31068, 32190, 32586, 34500, 35490, 40506, 42156, 46446, 47700, 48888, 50670, 53376, 55290, 55818, 58788, 65256, 65718, 68226, 73308, 74760, 75618, 77730, 86178 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS am+1, bm+1, cm+1 are primes and am | (N-1), bm | (N-1), cm |(N-1). REFERENCES Harvey Dubner (harvey(AT)dubner.com), personal communication, Jun 27 2001. LINKS Amiram Eldar, Table of n, a(n) for n = 1..10000 MATHEMATICA CarmichaelNbrQ[n_] := ! PrimeQ@ n && Mod[n, CarmichaelLambda@ n] == 1; Select[ Range@ 88000, PrimeQ[# + 1] && PrimeQ[2# + 1] && PrimeQ[11# + 1] && CarmichaelNbrQ[(# + 1)(2# + 1)(11# + 1)] &] (* Robert G. Wilson v, Aug 23 2012 *) CROSSREFS Cf. A087788. Sequence in context: A134602 A268373 A030029 * A116339 A225440 A098840 Adjacent sequences: A064239 A064240 A064241 * A064243 A064244 A064245 KEYWORD nonn AUTHOR N. J. A. Sloane, Sep 23 2001 EXTENSIONS Offset corrected by Amiram Eldar, Oct 16 2019 STATUS approved

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Last modified May 21 08:56 EDT 2024. Contains 372733 sequences. (Running on oeis4.)