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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
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
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
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