A070460 a(n) = n^2 mod 38.

0, 1, 4, 9, 16, 25, 36, 11, 26, 5, 24, 7, 30, 17, 6, 35, 28, 23, 20, 19, 20, 23, 28, 35, 6, 17, 30, 7, 24, 5, 26, 11, 36, 25, 16, 9, 4, 1, 0, 1, 4, 9, 16, 25, 36, 11, 26, 5, 24, 7, 30, 17, 6, 35, 28, 23, 20, 19, 20, 23, 28, 35, 6, 17, 30, 7, 24, 5, 26, 11, 36, 25, 16, 9, 4, 1, 0, 1, 4

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, 0, 0, 0, 0, 0, 0, 0, 1).

Formula

a(n) = a(n-38). - G. C. Greubel, Mar 25 2016

Mathematica

Table[Mod[n^2, 38], {n, 0, 200}] (* Vladimir Joseph Stephan Orlovsky, Apr 27 2011 *)
PowerMod[Range[0, 80], 2, 38] (* Harvey P. Dale, Feb 10 2015 *)

Prog

(PARI) a(n)=n^2%38 \\ Charles R Greathouse IV, Apr 06 2016

Crossrefs

Cf. A070456, A070457.

Sequence in context: A070463 A070462 A070461 * A070459 A292676 A241971

Adjacent sequences: A070457 A070458 A070459 * A070461 A070462 A070463

Keyword

nonn,easy

Author

N. J. A. Sloane, May 12 2002

Status

approved