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 A108812 11^n mod 50. 0
 1, 11, 21, 31, 41, 1, 11, 21, 31, 41, 1, 11, 21, 31, 41, 1, 11, 21, 31, 41, 1, 11, 21, 31, 41, 1, 11, 21, 31, 41, 1, 11, 21, 31, 41, 1, 11, 21, 31, 41, 1, 11, 21, 31, 41, 1, 11, 21, 31, 41, 1, 11, 21, 31, 41, 1, 11, 21, 31, 41, 1, 11, 21, 31, 41, 1, 11, 21, 31, 41, 1, 11, 21, 31, 41 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS An example of a sequence which is both in arithmetic and geometric progression. REFERENCES E. Schmid, Problem 961, Math. Mag., 50 (No. 1, 1977), 52. LINKS Table of n, a(n) for n=0..74. MATHEMATICA PowerMod[11, Range[0, 120], 50] (* or *) PadRight[{}, 120, {1, 11, 21, 31, 41}] (* Harvey P. Dale, Aug 28 2017 *) PROG (PARI) a(n)=lift(Mod(11, 50)^n) \\ Charles R Greathouse IV, Mar 22 2016 CROSSREFS Sequence in context: A068633 A225297 A123849 * A216100 A017281 A061589 Adjacent sequences: A108809 A108810 A108811 * A108813 A108814 A108815 KEYWORD nonn,easy AUTHOR N. J. A. Sloane, Jul 31 2005 STATUS approved

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Last modified October 3 19:07 EDT 2023. Contains 365870 sequences. (Running on oeis4.)