A019318 ? (Sorry - figured it out.)

[David Wilson]

Brendan McKay wrote:

> I agree with you about "queens", that really must go.  I suggest
> "Inequivalent ways of choosing n squares of an n x n chessboard,
> considering rotations and reflections."

Or maybe chess has to go:

"Ways of choosing n squares on an n x n grid up to rotation and reflection"
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