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A028742
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Nonsquares mod 29.
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1
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2, 3, 8, 10, 11, 12, 14, 15, 17, 18, 19, 21, 26, 27
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listen;
history;
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OFFSET
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1,1
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LINKS
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EXAMPLE
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Since 12 is not a perfect square and there are no solutions to x^2 = 12 mod 29, 12 is in the sequence.
Although 13 is not a perfect square either, there are solutions to x^2 = 13 mod 29, such as x = 10, x = 19, so 13 is not in the sequence.
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MATHEMATICA
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Complement[Range[0, 28], PowerMod[Range[29], 2, 29]] (* Alonso del Arte, Nov 29 2019 *)
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PROG
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(Scala) val squaresMod29 = (1 to 29).map(n => n * n).map(_ % 29)
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CROSSREFS
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KEYWORD
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nonn,fini,full
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AUTHOR
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STATUS
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approved
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