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A189304
Number of n X n array permutations with each element moving zero or one space diagonally, horizontally or vertically
0
1, 14, 960, 654049, 3373180708, 146610388175180, 52114841233680255776, 153220700522675894994117846
OFFSET
1,2
COMMENTS
Diagonal of A189312
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 A349737
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 19 2011
STATUS
approved