A268613 Lucas numbers mod 20.

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

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 A061084 A000032

Adjacent sequences: A268610 A268611 A268612 * A268614 A268615 A268616

Keyword

nonn,easy

Author

G. C. Greubel, Feb 08 2016

Status

approved