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A189304 Number of nXn array permutations with each element moving zero or one space diagonally, horizontally or vertically 0
1, 14, 960, 654049, 3373180708, 146610388175180, 52114841233680255776, 153220700522675894994117846 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A189312

LINKS

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

EXAMPLE

Some solutions for 3X3

..3..2..1....1..0..2....0..1..2....3..2..1....0..1..5....3..5..1....4..0..2

..0..4..8....7..5..8....7..4..5....6..0..5....4..8..2....0..4..2....7..3..1

..7..6..5....3..6..4....3..6..8....7..4..8....3..6..7....7..6..8....6..8..5

CROSSREFS

Sequence in context: A055152 A171183 A064729 * A123178 A208318 A208388

Adjacent sequences:  A189301 A189302 A189303 * A189305 A189306 A189307

KEYWORD

nonn

AUTHOR

R. H. Hardin Apr 19 2011

STATUS

approved

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Last modified October 24 08:05 EDT 2014. Contains 248502 sequences.