The OEIS is supported by the many generous donors to the OEIS Foundation.

 Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 60th year, we have over 367,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”). Other ways to Give
 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A064262 Values of m such that N=(am+1)(bm+1)(cm+1) is a 3-Carmichael number (A087788), 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, 141906, 146190, 147516, 155166 (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@ 9000, PrimeQ[# + 1] && PrimeQ[2# + 1] && PrimeQ[51# + 1] && CarmichaelNbrQ[(# + 1)(2# + 1)(51# + 1)] &] (* Robert G. Wilson v, Aug 23 2012 *) CROSSREFS Cf. A087788. 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 EXTENSIONS Offset corrected and more terms added by Amiram Eldar, Oct 17 2019 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified December 5 10:56 EST 2023. Contains 367589 sequences. (Running on oeis4.)