A186968 Number of 5-turn queen's tours on an n X n board summed over all starting positions

0, 0, 5120, 77384, 473632, 1875432, 5706000, 14543984

Offset

1,3

Comments

Row 5 of A186965

Links

Table of n, a(n) for n=1..8.

Example

Some solutions for 3X3
..0..4..0....1..2..3....2..0..0....0..0..1....3..0..4....0..2..0....5..2..0
..0..5..0....0..0..0....0..1..0....5..2..0....0..5..0....4..1..3....0..1..3
..2..3..1....0..5..4....4..5..3....4..0..3....2..1..0....5..0..0....0..0..4

Crossrefs

Sequence in context: A195653 A187030 A237328 * A195648 A252919 A255779

Adjacent sequences: A186965 A186966 A186967 * A186969 A186970 A186971

Keyword

nonn

Author

R. H. Hardin Mar 01 2011

Status

approved