OFFSET
1,3
MATHEMATICA
Union[PowerMod[Range[0, 25], 2, 26]] (* Alonso del Arte, Nov 26 2019 *)
PROG
(Sage) [quadratic_residues(26)] # Zerinvary Lajos, May 24 2009
(Scala) (0 to 25).map(n => n * n).map(_ % 26).toSet.toSeq.sorted // Alonso del Arte, Nov 26 2019
CROSSREFS
KEYWORD
nonn,fini,full
AUTHOR
STATUS
approved