A070453 a(n) = n^2 mod 31.

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

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

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

Cf. A070450, A070451.

Sequence in context: A070456 A070455 A070454 * A070452 A070653 A304233

Adjacent sequences: A070450 A070451 A070452 * A070454 A070455 A070456

Keyword

nonn,easy

Author

N. J. A. Sloane, May 12 2002

Status

approved