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A065701 Numbers m such that N = (am+1)(bm+1)(cm+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,67. 3
11958, 44118, 88740, 97986, 108438, 184416, 245520, 347628, 348030, 418380, 516870, 542598, 546618, 590436, 637470, 674856, 679680, 767316, 809526, 817566, 818370, 888720, 904800, 914046, 930930, 938568, 1006506, 1020978, 1047510, 1070826, 1081278, 1155246, 1209516 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
FORMULA
am+1, bm+1, cm+1 are primes and am|(N-1), bm|(N-1), cm|(N-1).
MATHEMATICA
CarmichaelNbrQ[n_] := ! PrimeQ@ n && Mod[n, CarmichaelLambda@ n] == 1; Select[ Range@ 1250000, PrimeQ[# + 1] && PrimeQ[2# + 1] && PrimeQ[67# + 1] && CarmichaelNbrQ[(# + 1)(2# + 1)(67# + 1)] &] (* Robert G. Wilson v, Aug 23 2012 *)
CROSSREFS
Sequence in context: A237635 A344629 A252948 * A237491 A235074 A251163
KEYWORD
nonn
AUTHOR
Harvey Dubner (harvey(AT)dubner.com), Nov 14 2001
STATUS
approved

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Last modified May 19 14:23 EDT 2024. Contains 372697 sequences. (Running on oeis4.)