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A064247 Values of m such that N=(am+1)(bm+1)(cm+1) is a Carmichael number, where a,b,c = 1,2,21. +0
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30, 198, 366, 576, 618, 828, 1626, 2466, 2550, 3390, 4860, 4986, 5658, 6036, 6120, 6708, 6960, 7506, 12966, 13218, 13680, 15318, 16746, 18048, 18678, 19476, 20946, 21030, 21786, 22668, 23130, 23676, 23760, 25608, 26406, 26700 (list; graph; listen)
OFFSET

0,1

COMMENT

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.

CROSSREFS

Sequence in context: A042758 A071311 A120339 this_sequence A125340 A126498 A029545

Adjacent sequences: A064244 A064245 A064246 this_sequence A064248 A064249 A064250

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Sep 23 2001

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Last modified November 27 14:50 EST 2009. Contains 167570 sequences.


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