A070493 a(n) = n^3 mod 31.

0, 1, 8, 27, 2, 1, 30, 2, 16, 16, 8, 29, 23, 27, 16, 27, 4, 15, 4, 8, 2, 23, 15, 15, 29, 1, 30, 29, 4, 23, 30, 0, 1, 8, 27, 2, 1, 30, 2, 16, 16, 8, 29, 23, 27, 16, 27, 4, 15, 4, 8, 2, 23, 15, 15, 29, 1, 30, 29, 4, 23, 30, 0, 1, 8, 27, 2, 1, 30, 2, 16, 16, 8, 29, 23, 27, 16, 27, 4, 15, 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, 1).

Formula

a(n) = a(n-31). - G. C. Greubel, Mar 30 2016

Mathematica

Table[Mod[n^3, 31], {n, 0, 100}] (* Vincenzo Librandi, Jun 19 2014 *)
PowerMod[Range[0, 100], 3, 31] (* Harvey P. Dale, Apr 13 2015 *)

Prog

(Sage) [power_mod(n, 3, 31 )for n in range(0, 81)] # Zerinvary Lajos, Oct 30 2009
(Magma) [n^3 mod 31: n in [0..80]]; // Vincenzo Librandi, Jun 19 2014
(PARI) a(n)=n^3%31 \\ Charles R Greathouse IV, Apr 06 2016

Crossrefs

Cf. A008960.

Sequence in context: A070494 A334659 A350625 * A257853 A070492 A070711

Adjacent sequences: A070490 A070491 A070492 * A070494 A070495 A070496

Keyword

nonn,easy

Author

N. J. A. Sloane, May 12 2002

Status

approved