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A028735
Nonsquares mod 22.
1
2, 6, 7, 8, 10, 13, 17, 18, 19, 21
OFFSET
1,1
MATHEMATICA
Complement[Range[0, 21], PowerMod[Range[22], 2, 22]] (* Alonso del Arte, Dec 22 2019 *)
PROG
(Scala) (0 to 21).diff((1 to 22).map(n => (n * n) % 22)) // Alonso del Arte, Dec 22 2019
CROSSREFS
Cf. A010384.
Sequence in context: A028774 A355160 A343719 * A267541 A325465 A047553
KEYWORD
nonn,fini,full,easy
EXTENSIONS
Incorrect term 11 removed by Alonso del Arte, Dec 22 2019
STATUS
approved