Number of nonequivalent ways to place n non-attacking rooks on an n X n board with no rook on 2 main diagonals up to rotations and reflections of the board.
A292080
Number of nonequivalent ways to place n non-attacking rooks on an n X n board with no rook on 2 main diagonals up to rotations and reflections of the board.
Terms
- a(0) =1a(1) =0a(2) =0a(3) =0a(4) =2a(5) =2a(6) =14a(7) =84a(8) =630a(9) =6096a(10) =55336a(11) =672160a(12) =7409300a(13) =104999520a(14) =1366363752a(15) =22068387264a(16) =331233939624
External references
- oeis: A292080