

A070535


a(n) = n^4 mod 18.


1



0, 1, 16, 9, 4, 13, 0, 7, 10, 9, 10, 7, 0, 13, 4, 9, 16, 1, 0, 1, 16, 9, 4, 13, 0, 7, 10, 9, 10, 7, 0, 13, 4, 9, 16, 1, 0, 1, 16, 9, 4, 13, 0, 7, 10, 9, 10, 7, 0, 13, 4, 9, 16, 1, 0, 1, 16, 9, 4, 13, 0, 7, 10, 9, 10, 7, 0, 13, 4, 9, 16, 1, 0, 1, 16, 9, 4, 13, 0, 7, 10, 9, 10, 7, 0, 13, 4, 9, 16, 1
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OFFSET

0,3


COMMENTS



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).


FORMULA

a(6*n) = 0.
a(n+18) = a(n). (End)


MATHEMATICA

PadRight[{}, 120, {0, 1, 16, 9, 4, 13, 0, 7, 10, 9, 10, 7, 0, 13, 4, 9, 16, 1}] (* Harvey P. Dale, Mar 01 2023 *)


PROG

(Sage) [power_mod(n, 4, 18)for n in range(0, 90)] # Zerinvary Lajos, Oct 31 2009


CROSSREFS



KEYWORD

nonn,easy


AUTHOR



STATUS

approved



