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A070551 n^4 mod 23. 1
0, 1, 16, 12, 3, 4, 8, 9, 2, 6, 18, 13, 13, 18, 6, 2, 9, 8, 4, 3, 12, 16, 1, 0, 1, 16, 12, 3, 4, 8, 9, 2, 6, 18, 13, 13, 18, 6, 2, 9, 8, 4, 3, 12, 16, 1, 0, 1, 16, 12, 3, 4, 8, 9, 2, 6, 18, 13, 13, 18, 6, 2, 9, 8, 4, 3, 12, 16, 1, 0, 1, 16, 12, 3, 4, 8, 9, 2, 6, 18, 13, 13, 18, 6, 2, 9, 8, 4, 3 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

Equivalently: n^(22*m + 4) mod 23. - G. C. Greubel, Apr 06 2016

LINKS

G. C. Greubel, Table of n, a(n) for n = 0..1000

FORMULA

From G. C. Greubel, Apr 06 2016: (Start)

a(23*n) = 0.

a(n+23) = a(n). (End)

MATHEMATICA

PowerMod[Range[0, 90], 4, 23] (* Harvey P. Dale, Feb 25 2015 *)

PROG

(Sage) [power_mod(n, 4, 23)for n in xrange(0, 89)] # Zerinvary Lajos, Oct 31 2009

(PARI) a(n)=n^4%23 \\ Charles R Greathouse IV, Apr 06 2016

CROSSREFS

Sequence in context: A028695 A008665 A076823 * A028493 A291426 A299524

Adjacent sequences:  A070548 A070549 A070550 * A070552 A070553 A070554

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane, May 13 2002

STATUS

approved

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Last modified July 22 05:47 EDT 2019. Contains 325213 sequences. (Running on oeis4.)