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How many ways are there to put 9 differently colored beads on a 3x3 grid if the purple bead and the green bead cannot be adjacent (either horizontally, vertically, or diagonally), and rotations and reflections of the grid are considered the same?

 Mar 15, 2020
 #1
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I know that either the purple bead or the green bead can't be in the center of the grid, but I'm basically stuck there.

 Mar 15, 2020
 #2
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Also, the purple bead and the green bead can't be in the same 4x4 mini-grid. Does that help?

TheGreatestOofman  Mar 15, 2020

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