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A028754
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Nonsquares mod 41.
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1
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3, 6, 7, 11, 12, 13, 14, 15, 17, 19, 22, 24, 26, 27, 28, 29, 30, 34, 35, 38
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refs;
listen;
history;
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internal format)
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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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x^2 = 7 mod 41 has no solutions, so 7 is in the sequence.
x^2 = 8 mod 41 has the solutions x = 7 and x = 34. Hence 8 is not in the sequence.
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MATHEMATICA
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Complement[Range[40], PowerMod[Range[41], 2, 41]] (* Alonso del Arte, Jan 12 2017 *)
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PROG
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(Scala) (0 to 40).diff((1 to 41).map(n => n * n % 41)) // Alonso del Arte, May 01 2020
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CROSSREFS
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KEYWORD
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nonn,fini,full,easy
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AUTHOR
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STATUS
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approved
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