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

Author

N. J. A. Sloane

Keywords

• nonn
• fini
• full
• easy

Crossrefs

Cf. A010411, A028738 (subsequence).

Programs

Mathematica

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

Scala

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