A number of the form is said to be an antisquare if it fails to be a square number for the two reasons that is odd and is a nonsquare (modulo ).

The first few antisquare numbers are 6, 10, 15, 21, 22, 24, 26, 33, 35, 38, ... (OEIS
A080255).

## See also

Square Number,

Squarefree,

Squareful
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## References

Sloane, N. J. A. Sequence A080255 in "The On-Line Encyclopedia of Integer Sequences."## Referenced
on Wolfram|Alpha

Antisquare Number
## Cite this as:

Weisstein, Eric W. "Antisquare Number."
From *MathWorld*--A Wolfram Web Resource. https://mathworld.wolfram.com/AntisquareNumber.html

## Subject classifications