A010380 - OEIS

A010380

Squares mod 18.

0, 1, 4, 7, 9, 10, 13, 16

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,3

LINKS

MATHEMATICA

Union[PowerMod[Range[18], 2, 18]] (* Alonso del Arte, Dec 18 2019 *)

PROG

(Sage) [quadratic_residues(18)] # Zerinvary Lajos, May 24 2009

(Scala) (1 to 18).map(n => (n * n) % 18).toSet.toSeq.sorted // Alonso del Arte, Dec 18 2019

CROSSREFS

Row 18 of A096008.

KEYWORD

nonn,fini,full

AUTHOR

STATUS

approved