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A010388 Squares mod 26. 1
0, 1, 3, 4, 9, 10, 12, 13, 14, 16, 17, 22, 23, 25 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

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

MATHEMATICA

Union[PowerMod[Range[0, 25], 2, 26]] (* Alonso del Arte, Nov 26 2019 *)

PROG

(Sage) [quadratic_residues(26)] # Zerinvary Lajos, May 24 2009

(Scala) (0 to 25).map(n => n * n).map(_ % 26).toSet.toSeq.sorted // Alonso del Arte, Nov 26 2019

CROSSREFS

Cf. A028739.

Sequence in context: A280632 A178462 A010376 * A283973 A276672 A010400

Adjacent sequences:  A010385 A010386 A010387 * A010389 A010390 A010391

KEYWORD

nonn,fini,full

AUTHOR

N. J. A. Sloane

STATUS

approved

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Last modified June 7 01:26 EDT 2020. Contains 334836 sequences. (Running on oeis4.)