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A010381
Squares mod 19.
1
0, 1, 4, 5, 6, 7, 9, 11, 16, 17
OFFSET
1,3
MATHEMATICA
Union[PowerMod[Range[19], 2, 19]] (* Alonso del Arte, Dec 19 2019 *)
PROG
(Sage) [quadratic_residues(19)] # Zerinvary Lajos, May 24 2009
(Scala) (1 to 19).map(n => (n * n) % 19).toSet.toSeq.sorted // Alonso del Arte, Dec 19 2019
CROSSREFS
Row 19 of A096008.
Cf. A028732.
Sequence in context: A260997 A192242 A209321 * A095033 A010399 A215046
KEYWORD
nonn,fini,full
STATUS
approved