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A010417
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Squares mod 56.
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1
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0, 1, 4, 8, 9, 16, 25, 28, 32, 36, 44, 49
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,3
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LINKS
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Table of n, a(n) for n=1..12.
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MATHEMATICA
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Union[PowerMod[Range[56], 2, 56]] (* Alonso del Arte, Dec 28 2019 *)
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PROG
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(Sage) [quadratic_residues(56)] # Zerinvary Lajos, May 24 2009
(Scala) (1 to 56).map(n => (n * n) % 56).toSet.toSeq.sorted // Alonso del Arte, Dec 28 2019
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CROSSREFS
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Cf. A028769.
Sequence in context: A002760 A115651 A062559 * A155568 A067252 A324723
Adjacent sequences: A010414 A010415 A010416 * A010418 A010419 A010420
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KEYWORD
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nonn,fini,full,easy
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AUTHOR
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N. J. A. Sloane
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STATUS
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approved
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