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 A268613 Lucas numbers mod 20. 2
 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, 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, 18, 9, 7, 16, 3, 19, 2, 1, 3, 4, 7, 11, 18, 9, 7, 16, 3, 19, 2, 1, 3, 4, 7, 11 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 COMMENTS Sequence of period 12. This is one of four sequences that are period 12 of the form Lucas[n] Mod x, where x is 8,10,20,40. LINKS G. C. Greubel, Table of n, a(n) for n = 0..10000 FORMULA a(n+12) = a(n). MATHEMATICA Table[Mod[LucasL[n], 20], {n, 0, 100}] PROG (MAGMA) [Lucas(n) mod 20: n in [0..100]]; // Vincenzo Librandi, Feb 09 2016 CROSSREFS Cf. A000032, A111958, A130893. Sequence in context: A058658 A070827 A160191 * A268615 A000032 A061084 Adjacent sequences:  A268610 A268611 A268612 * A268614 A268615 A268616 KEYWORD nonn,easy AUTHOR G. C. Greubel, Feb 08 2016 STATUS approved

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