OFFSET
0,3
COMMENTS
Periodic with period length equal to 25. - Harvey P. Dale, May 11 2020
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, 0, 0, 0, 0, 0, 1).
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
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, May 13 2002
STATUS
approved