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A186967
Number of 4-turn queen's tours on an n X n board summed over all starting positions
0
0, 24, 1344, 10440, 43424, 130592, 320880, 686384, 1326848, 2374152, 3996832
OFFSET
1,2
COMMENTS
Row 4 of A186965
EXAMPLE
Some solutions for 3X3
..0..0..4....4..0..0....0..0..0....0..4..0....3..2..1....0..2..0....0..3..0
..0..0..2....0..3..1....0..2..1....2..1..3....0..0..0....4..0..3....1..4..2
..0..1..3....0..0..2....4..3..0....0..0..0....4..0..0....0..1..0....0..0..0
CROSSREFS
Sequence in context: A367706 A188807 A187029 * A068294 A003170 A160310
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 01 2011
STATUS
approved