OFFSET
1,3
MATHEMATICA
Union[PowerMod[Range[0, 52], 2, 53]] (* Harvey P. Dale, Apr 02 2011 *)
PROG
(Sage) [quadratic_residues(53)] # Zerinvary Lajos, May 24 2009
(Scala) (1 to 53).map(n => n * n % 53).toSet.toList.sorted // Alonso del Arte, May 03 2020
CROSSREFS
KEYWORD
nonn,fini,full,easy
AUTHOR
STATUS
approved