A186965 T(n,k)=Number of n-turn queen's tours on a kXk board summed over all starting positions.

1, 4, 0, 9, 12, 0, 16, 56, 24, 0, 25, 152, 296, 24, 0, 36, 320, 1304, 1344, 0, 0, 49, 580, 3808, 10440, 5120, 0, 0, 64, 952, 8832, 43424, 77384, 15760, 0, 0, 81, 1456, 17672, 130592, 473632, 527528, 36816, 0, 0, 100, 2112, 31888, 320880, 1875432, 4927216

Offset: 1

Author

R. H. Hardin Mar 01 2011

Keywords

• nonn
• tabl

Comments

Table starts

.1..4.....9.......16.......25.......36......49.......64......81...100..121.144

.0.12....56......152......320......580.....952.....1456....2112..2940.3960

.0.24...296.....1304.....3808.....8832...17672....31888...53312.84040

.0.24..1344....10440....43424...130592..320880...686384.1326848

.0..0..5120....77384...473632..1875432.5706000.14543984

.0..0.15760...527528..4927216.26115816

.0..0.36816..3280384.48781648

.0..0.57904.18430848

.0..0.45856

.0..0

Examples

			Some n=3 solutions for 3X3
..0..3..1....0..1..0....3..0..0....2..1..0....0..0..0....0..0..0....1..0..0
..0..0..2....0..2..0....2..0..0....0..0..0....1..2..0....0..1..3....2..3..0
..0..0..0....0..3..0....1..0..0....3..0..0....0..0..3....0..2..0....0..0..0
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..71

Crossrefs

Row 2 is A035005