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

Author

N. J. A. Sloane

Keywords

• nonn
• fini
• full
• easy

Comments

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

Crossrefs

Cf. A010410, A028811.

Programs

Mathematica

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

Scala

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