

A010449


Squares mod 88.


0



0, 1, 4, 9, 12, 16, 20, 25, 33, 36, 44, 48, 49, 56, 60, 64, 80, 81
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OFFSET

1,3


LINKS

Table of n, a(n) for n=1..18.


EXAMPLE

48 is in the sequence since x^2 = 48 mod 88 has the solutions x = 20, 24, 64, 68.
49 = 7^2 and is thus obviously in the sequence.
There are no solutions to x^2 = 50 mod 88, so 50 is not in the sequence.


MATHEMATICA

Union[PowerMod[Range[88], 2, 88]] (* Alonso del Arte, Apr 05 2017 *)


PROG

(Sage) [quadratic_residues(88)] # Zerinvary Lajos, May 28 2009


CROSSREFS

Sequence in context: A135572 A312855 A312856 * A210607 A312857 A309134
Adjacent sequences: A010446 A010447 A010448 * A010450 A010451 A010452


KEYWORD

nonn,fini,full,easy


AUTHOR

N. J. A. Sloane


STATUS

approved



