A028763 Nonsquares mod 50.

2, 3, 5, 7, 8, 10, 12, 13, 15, 17, 18, 20, 22, 23, 27, 28, 30, 32, 33, 35, 37, 38, 40, 42, 43, 45, 47, 48

Offset

1,1

Links

Table of n, a(n) for n=1..28.

Mathematica

Complement[Range[0, 49], PowerMod[Range[50], 2, 50]] (* Alonso del Arte, Dec 25 2019 *)

Prog

(Scala) (0 to 49).diff((1 to 50).map(n => (n * n) % 50)) // Alonso del Arte, Dec 25 2019

Crossrefs

Cf. A010411.

Sequence in context: A003258 A028738 A047222 * A285977 A186344 A186317

Adjacent sequences: A028760 A028761 A028762 * A028764 A028765 A028766

Keyword

nonn,fini,full,easy

Author

N. J. A. Sloane

Status

approved