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A187032 Number of 7-step one or two collinear space at a time queen's tours on an n X n board summed over all starting positions 0
0, 0, 36816, 1384152, 9151912, 30203792, 69641344, 129718288 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Row 7 of A187027

LINKS

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

EXAMPLE

Some solutions for 4X4

..3..0..2..0....0..0..6..0....0..3..4..0....0..7..0..0....0..0..0..0

..0..7..0..1....0..2..0..7....2..5..6..0....6..0..5..4....0..2..0..0

..4..6..5..0....0..1..5..0....1..7..0..0....2..1..0..0....0..1..6..0

..0..0..0..0....0..4..0..3....0..0..0..0....0..3..0..0....4..3..5..7

CROSSREFS

Sequence in context: A061739 A232135 A212467 * A251386 A175748 A204104

Adjacent sequences:  A187029 A187030 A187031 * A187033 A187034 A187035

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 02 2011

STATUS

approved

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Last modified August 9 10:09 EDT 2022. Contains 356021 sequences. (Running on oeis4.)