A010439 Squares mod 78.

0, 1, 3, 4, 9, 10, 12, 13, 16, 22, 25, 27, 30, 36, 39, 40, 42, 43, 48, 49, 51, 52, 55, 61, 64, 66, 69, 75

Offset: 1

Author

N. J. A. Sloane

Keywords

• nonn
• fini
• full
• easy

Crossrefs

Cf. A010400, A028791.

Programs

Mathematica

Union[PowerMod[Range[78], 2, 78]] (* Alonso del Arte, Dec 26 2019 *)

Sage

[quadratic_residues(78)] # Zerinvary Lajos, May 28 2009

Scala

(1 to 78).map(n => (n * n) % 78).toSet.toSeq.sorted // Alonso del Arte, Dec 26 2019