A028738 Nonsquares mod 25.

2, 3, 5, 7, 8, 10, 12, 13, 15, 17, 18, 20, 22, 23

Offset: 1

Author

N. J. A. Sloane

Keywords

• nonn
• fini
• full
• easy

Crossrefs

Cf. A010387.

Programs

Mathematica

Complement[Range[0, 24], PowerMod[Range[0, 24], 2, 25]] (* Alonso del Arte, Nov 25 2019 *)

Scala

val squaresMod25 = (0 to 24).map(n => n * n).map(_ % 25)
(0 to 24).diff(squaresMod25) // Alonso del Arte, Nov 25 2019