A010386 Squares mod 24.
0, 1, 4, 9, 12, 16
Offset: 1
Programs
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Maple
sort(convert({seq(i^2 mod 24,i=0..12)},list)); # Robert Israel, Apr 19 2017 -
Mathematica
Union[PowerMod[Range[24], 2, 24]] (* Alonso del Arte, Apr 06 2017 *)
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Sage
[quadratic_residues(24)] # Zerinvary Lajos, May 24 2009
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Scala
(1 to 24).map(n => (n * n) % 24).toSet.toSeq.sorted // Alonso del Arte, Dec 24 2019