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A070700
a(n) = n^7 mod 18.
1
0, 1, 2, 9, 4, 5, 0, 7, 8, 9, 10, 11, 0, 13, 14, 9, 16, 17, 0, 1, 2, 9, 4, 5, 0, 7, 8, 9, 10, 11, 0, 13, 14, 9, 16, 17, 0, 1, 2, 9, 4, 5, 0, 7, 8, 9, 10, 11, 0, 13, 14, 9, 16, 17, 0, 1, 2, 9, 4, 5, 0, 7, 8, 9, 10, 11, 0, 13, 14, 9, 16, 17, 0, 1, 2, 9, 4, 5, 0, 7, 8, 9, 10, 11, 0, 13, 14, 9, 16, 17
OFFSET
0,3
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, 1).
MATHEMATICA
PowerMod[Range[0, 100], 7, 18] (* Vincenzo Librandi, Jun 17 2016 *)
PROG
(Sage) [power_mod(n, 7, 18) for n in range(90)] # Zerinvary Lajos, Oct 28 2009
(PARI) a(n)=n^7%18 \\ Charles R Greathouse IV, Apr 06 2016
(Magma) [Modexp(n, 7, 18): n in [0..80]]; // Vincenzo Librandi, Jun 17 2016
CROSSREFS
Sequence in context: A097881 A019758 A016642 * A372955 A371983 A248682
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, May 13 2002
STATUS
approved