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URL: https://oeis.org/A216129

⇱ A216129 - OEIS

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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
OFFSET
0,2
COMMENTS
Period = 20.
LINKS
Index entries for linear recurrences with constant coefficients, signature (0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1).
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
Sequence in context: A250349 A171281 A328086 * A057266 A057833 A014949
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