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A186856 Number of 7-step knight's tours on a (n+2)X(n+2) board summed over all starting positions 0
16, 1280, 21664, 118480, 372384, 847520, 1584576, 2596480, 3879696, 5424848 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 7 of A186851

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions for 5X5

..0..1..0..0..0....2..0..0..0..0....0..0..0..1..0....2..0..0..0..0

..0..0..0..0..0....0..0..3..0..0....3..6..0..0..0....0..0..1..0..0

..0..5..2..0..0....0..1..6..0..0....0..0..2..5..0....0..3..6..0..0

..7..0..0..4..0....0..4..0..0..0....0..4..7..0..0....0..0..0..4..7

..0..3..6..0..0....0..7..0..5..0....0..0..0..0..0....0..5..0..0..0

CROSSREFS

Sequence in context: A222888 A113104 A227602 * A000490 A027648 A224105

Adjacent sequences:  A186853 A186854 A186855 * A186857 A186858 A186859

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 27 2011

STATUS

approved

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Last modified July 28 14:27 EDT 2014. Contains 245000 sequences.