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 A163956 Multiplicative order of 2 in Z/mZ with m = A002997(n). 3
 40, 24, 36, 56, 60, 660, 198, 252, 45, 180, 60, 144, 153, 1012, 36, 120, 300, 72, 36, 1160, 60, 36, 300, 56, 36, 660, 4284, 264, 420, 3060, 2268, 180, 540, 1680, 120, 4900, 1080, 396, 72, 72, 60, 60, 144, 2970, 612, 396, 324, 210, 180, 540, 504, 792, 198, 180 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Related sequence: A162990. - A.K. Devaraj, Aug 31 2009 REFERENCES A. K. Devaraj, "Minimum universal exponent generalisation of Fermat's theorem" (ISSN 1550-3747) LINKS Amiram Eldar, Table of n, a(n) for n = 1..10000 FORMULA a(n) = A002326((A002997(n)-1)/2) = A007733(A002997(n)). - Amiram Eldar, Jul 30 2020 MATHEMATICA MultiplicativeOrder[2, #] & /@ Select[Range[1, 10^6, 2], CompositeQ[#] && Divisible[# - 1, CarmichaelLambda[#]] &] (* Amiram Eldar, Jul 30 2020 *) CROSSREFS Cf. A002326, A002997, A007733, A104016, A162990, A165139. Sequence in context: A029543 A097208 A216137 * A229661 A070724 A035878 Adjacent sequences: A163953 A163954 A163955 * A163957 A163958 A163959 KEYWORD nonn AUTHOR A.K. Devaraj, Aug 28 2009 EXTENSIONS Corrected and extended by M. F. Hasler, Sep 23 2009 Edited by N. J. A. Sloane, Sep 23 2009, following suggestions from M. F. Hasler More terms from Amiram Eldar, Jul 30 2020 STATUS approved

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Last modified September 12 22:20 EDT 2024. Contains 375855 sequences. (Running on oeis4.)