A010417 Squares mod 56.

0, 1, 4, 8, 9, 16, 25, 28, 32, 36, 44, 49

Offset

1,3

Links

Table of n, a(n) for n=1..12.

Mathematica

Union[PowerMod[Range[56], 2, 56]] (* Alonso del Arte, Dec 28 2019 *)

Prog

(Sage) [quadratic_residues(56)] # Zerinvary Lajos, May 24 2009
(Scala) (1 to 56).map(n => (n * n) % 56).toSet.toSeq.sorted // Alonso del Arte, Dec 28 2019

Crossrefs

Cf. A028769.

Sequence in context: A355060 A115651 A062559 * A155568 A353485 A371010

Adjacent sequences: A010414 A010415 A010416 * A010418 A010419 A010420

Keyword

nonn,fini,full,easy

Author

N. J. A. Sloane

Status

approved