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A064253
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Values of n such that N=(an+1)(bn+1)(cn+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,33.
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1
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576, 1170, 2556, 6120, 20706, 23676, 29220, 29286, 32586, 39450, 46380, 46446, 50076, 52386, 58920, 63210, 65256, 65850, 69876, 74100, 77796, 93240, 107826, 113370, 114030, 116340, 127296, 128220, 129606, 130530, 140826, 141156, 149340, 170196, 174090, 177126, 178446
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OFFSET
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1,1
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COMMENTS
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an+1, bn+1, cn+1 are primes and an | (N-1), bn | (N-1), cn |(N-1).
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REFERENCES
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Harvey Dubner (harvey(AT)dubner.com), personal communication, Jun 27 2001.
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LINKS
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MATHEMATICA
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carmQ[n_] := CompositeQ[n] && Divisible[n - 1, CarmichaelLambda[n]]; Select[Range[10^5], AllTrue[(v = {1, 2, 33}*# + 1), PrimeQ] && carmQ[Times @@ v] &] (* Amiram Eldar, Oct 17 2019 *)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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