A028762 Nonsquares mod 49.

3, 5, 6, 7, 10, 12, 13, 14, 17, 19, 20, 21, 24, 26, 27, 28, 31, 33, 34, 35, 38, 40, 41, 42, 45, 47, 48

Offset

1,1

Comments

First half of the elements of A028811. - R. J. Mathar, Oct 23 2008

Links

Table of n, a(n) for n=1..27.

Mathematica

Complement[Range[0, 48], PowerMod[Range[49], 2, 49]] (* Alonso del Arte, Jan 07 2020 *)

Prog

(Scala) (0 to 48).diff((1 to 49).map(n => n * n % 49)) // Alonso del Arte, Jan 07 2020

Crossrefs

Cf. A010410, A028811.

Sequence in context: A067350 A176651 A359879 * A047328 A028811 A034035

Adjacent sequences: A028759 A028760 A028761 * A028763 A028764 A028765

Keyword

nonn,fini,full,easy

Author

N. J. A. Sloane

Status

approved