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A064262 Values of m such that N=(am+1)(bm+1)(cm+1) is a Carmichael number, where a,b,c = 1,2,51. 11
330, 1656, 1758, 6960, 11958, 14406, 27258, 30318, 30930, 31236, 37356, 40110, 43986, 44088, 50820, 53268, 55818, 63366, 65100, 67650, 71526, 74586, 81930, 90906, 93150, 94476, 98250, 99678, 109470, 119568, 121710, 129768, 135276 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

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

Table of n, a(n) for n=0..32.

MATHEMATICA

CarmichaelNbrQ[n_] := ! PrimeQ@ n && Mod[n, CarmichaelLambda[n]] == 1; Select[ Range@ 9000, PrimeQ[# + 1] && PrimeQ[2# + 1] && PrimeQ[51# + 1] && CarmichaelNbrQ[(# + 1)(2# + 1)(51# + 1)] &] (* Robert G. Wilson v, Aug 23 2012 *)

CROSSREFS

Sequence in context: A244264 A117345 A237189 * A126997 A205993 A027807

Adjacent sequences:  A064259 A064260 A064261 * A064263 A064264 A064265

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Sep 23 2001

STATUS

approved

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Last modified April 23 13:25 EDT 2019. Contains 322386 sequences. (Running on oeis4.)