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 A268613 Lucas numbers mod 20. 2

%I

%S 2,1,3,4,7,11,18,9,7,16,3,19,2,1,3,4,7,11,18,9,7,16,3,19,2,1,3,4,7,11,

%T 18,9,7,16,3,19,2,1,3,4,7,11,18,9,7,16,3,19,2,1,3,4,7,11,18,9,7,16,3,

%U 19,2,1,3,4,7,11,18,9,7,16,3,19,2,1,3,4,7,11,18,9,7,16,3,19,2,1,3,4,7,11,18,9,7,16,3,19,2,1,3,4,7,11

%N Lucas numbers mod 20.

%C Sequence of period 12.

%C This is one of four sequences that are period 12 of the form Lucas[n] Mod x, where x is 8,10,20,40.

%H G. C. Greubel, <a href="/A268613/b268613.txt">Table of n, a(n) for n = 0..10000</a>

%F a(n+12) = a(n).

%t Table[Mod[LucasL[n],20],{n,0,100}]

%o (MAGMA) [Lucas(n) mod 20: n in [0..100]]; // _Vincenzo Librandi_, Feb 09 2016

%Y Cf. A000032, A111958, A130893.

%K nonn,easy

%O 0,1

%A _G. C. Greubel_, Feb 08 2016

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Last modified January 15 18:14 EST 2019. Contains 319153 sequences. (Running on oeis4.)