



0, 1, 16, 6, 6, 0, 21, 1, 21, 11, 0, 16, 11, 11, 16, 0, 11, 21, 1, 21, 0, 6, 6, 16, 1, 0, 1, 16, 6, 6, 0, 21, 1, 21, 11, 0, 16, 11, 11, 16, 0, 11, 21, 1, 21, 0, 6, 6, 16, 1, 0, 1, 16, 6, 6, 0, 21, 1, 21, 11, 0, 16, 11, 11, 16, 0, 11, 21, 1, 21, 0, 6, 6, 16, 1, 0, 1, 16, 6, 6, 0, 21, 1, 21
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OFFSET

0,3


COMMENTS

Periodic with period length equal to 25.  Harvey P. Dale, May 11 2020


LINKS

Table of n, a(n) for n=0..83.


MATHEMATICA

PowerMod[Range[0, 90], 4, 25] (* or *) PadRight[{}, 120, {0, 1, 16, 6, 6, 0, 21, 1, 21, 11, 0, 16, 11, 11, 16, 0, 11, 21, 1, 21, 0, 6, 6, 16, 1}] (* Harvey P. Dale, May 11 2020 *)


PROG

(Sage) [power_mod(n, 4, 25)for n in range(0, 84)] #  Zerinvary Lajos, Oct 31 2009
(PARI) a(n)=n^4%25 \\ Charles R Greathouse IV, Apr 06 2016


CROSSREFS

Sequence in context: A040244 A084527 A084517 * A161884 A166210 A141078
Adjacent sequences: A070565 A070566 A070567 * A070569 A070570 A070571


KEYWORD

nonn,easy


AUTHOR

N. J. A. Sloane, May 13 2002


STATUS

approved



