A028738 Nonsquares mod 25.

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

Offset

1,1

Links

Table of n, a(n) for n=1..14.

Mathematica

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

Prog

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

Crossrefs

Cf. A010387.

Sequence in context: A364444 A062132 A003258 * A047222 A028763 A285977

Adjacent sequences: A028735 A028736 A028737 * A028739 A028740 A028741

Keyword

nonn,fini,full,easy

Author

N. J. A. Sloane

Status

approved