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A028795 Nonsquares mod 82. 2
3, 6, 7, 11, 12, 13, 14, 15, 17, 19, 22, 24, 26, 27, 28, 29, 30, 34, 35, 38, 44, 47, 48, 52, 53, 54, 55, 56, 58, 60, 63, 65, 67, 68, 69, 70, 71, 75, 76, 79 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..40.

MATHEMATICA

Complement[Range[0, 81], PowerMod[Range[82], 2, 82]] (* Alonso del Arte, May 01 2020 *)

PROG

(PARI) for(k=0, 82, if(!issquare(Mod(k, 82)), print1(k, ", "))) \\ Hugo Pfoertner, Nov 29 2019

(Scala) (0 to 81).diff((1 to 82).map(n => n * n % 82)) // Alonso del Arte, May 01 2020

CROSSREFS

Cf. A010443, A028754.

Sequence in context: A164557 A292608 A028754 * A004780 A292046 A051146

Adjacent sequences:  A028792 A028793 A028794 * A028796 A028797 A028798

KEYWORD

nonn,fini,full,easy

AUTHOR

N. J. A. Sloane.

EXTENSIONS

Incorrect term 41 removed by Alonso del Arte, Nov 29 2019

STATUS

approved

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Last modified May 14 07:13 EDT 2021. Contains 343879 sequences. (Running on oeis4.)