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 A216129 a(n) = 7^n mod 1000. 1
 1, 7, 49, 343, 401, 807, 649, 543, 801, 607, 249, 743, 201, 407, 849, 943, 601, 207, 449, 143, 1, 7, 49, 343, 401, 807, 649, 543, 801, 607, 249, 743, 201, 407, 849, 943, 601, 207, 449, 143, 1, 7, 49, 343, 401, 807, 649, 543, 801, 607, 249, 743, 201, 407, 849, 943, 601, 207, 449, 143, 1 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS Period = 20. LINKS Vincenzo Librandi, Table of n, a(n) for n = 0..1000 MATHEMATICA PowerMod[7, Range[0, 100], 1000] (* Vincenzo Librandi, Aug 16 2016 *) PROG (PARI) for(i=0, 100, print(7^i%1000" ")) (MAGMA) [Modexp(7, n, 1000): n in [0..110]]; // Vincenzo Librandi, Aug 16 2016 CROSSREFS Cf. A001903, A014390. Sequence in context: A323559 A250349 A171281 * A057266 A057833 A014949 Adjacent sequences:  A216126 A216127 A216128 * A216130 A216131 A216132 KEYWORD nonn,easy AUTHOR V. Raman, Sep 01 2012 EXTENSIONS a(0) = 1 prepended and offset changed by Vincenzo Librandi, Aug 16 2016 STATUS approved

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Last modified May 21 08:53 EDT 2019. Contains 323441 sequences. (Running on oeis4.)