A054580 n^2 modulo 17.

0, 1, 4, 9, 16, 8, 2, 15, 13, 13, 15, 2, 8, 16, 9, 4, 1, 0, 1, 4, 9, 16, 8, 2, 15, 13, 13, 15, 2, 8, 16, 9, 4, 1, 0, 1, 4, 9, 16, 8, 2, 15, 13, 13, 15, 2, 8, 16, 9, 4, 1, 0, 1, 4, 9, 16, 8, 2, 15, 13, 13, 15, 2, 8, 16, 9, 4, 1, 0, 1, 4, 9, 16, 8, 2, 15, 13, 13, 15, 2, 8, 16, 9, 4, 1, 0, 1, 4, 9

Offset: 0

Author

Stuart M. Ellerstein (ellerstein(AT)aol.com), Apr 11 2000

Keywords

• nonn
• easy

Crossrefs

Cf. A070439, A070440, A070441.

Programs

Mathematica

Table[Mod[n^2,17],{n,0,200}] (* Vladimir Joseph Stephan Orlovsky, Apr 23 2011 *)
PowerMod[Range[0,90],2,17] (* Harvey P. Dale, Aug 16 2012 *)

PARI

a(n)=n^2%17 \\ Charles R Greathouse IV, Apr 06 2016

Extensions

More terms from James Sellers, Apr 12 2000