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A130728
Number of ways of placing non-attacking knights on an n X n chessboard symmetric under 90 degree rotation.
+0
1
1, 2, 2, 6, 3, 27, 28, 324, 338, 5991, 6875, 228512, 322056, 17782554, 30487207, 2704389848, 5451449965, 819155081866, 1981437279113, 497332226754331, 1457925225531230, 603767469974886673, 2133983730438871395
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Maintained by
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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.
AT&T Labs Research
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