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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: A250349 A171281 A328086 * 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 December 7 05:14 EST 2019. Contains 329839 sequences. (Running on oeis4.)