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A070453
a(n) = n^2 mod 31.
5
0, 1, 4, 9, 16, 25, 5, 18, 2, 19, 7, 28, 20, 14, 10, 8, 8, 10, 14, 20, 28, 7, 19, 2, 18, 5, 25, 16, 9, 4, 1, 0, 1, 4, 9, 16, 25, 5, 18, 2, 19, 7, 28, 20, 14, 10, 8, 8, 10, 14, 20, 28, 7, 19, 2, 18, 5, 25, 16, 9, 4, 1, 0, 1, 4, 9, 16, 25, 5, 18, 2, 19, 7, 28, 20, 14, 10, 8, 8, 10, 14, 20
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, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1).
FORMULA
a(n) = a(n-31). - G. C. Greubel, Mar 24 2016
MATHEMATICA
Table[Mod[n^2, 31], {n, 0, 200}] (* Vladimir Joseph Stephan Orlovsky, Apr 27 2011 *)
PROG
(PARI) a(n)=n^2%31 \\ Charles R Greathouse IV, Apr 06 2016
CROSSREFS
Sequence in context: A070456 A070455 A070454 * A070452 A070653 A304233
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, May 12 2002
STATUS
approved