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A189178
Number of n X n array permutations with each element making a single king move.
0
0, 9, 192, 251720, 1339732352, 108943637068673, 76260881288534294528, 594579828469677562655346609, 46342255378179654331792920815382272, 37825739518339601867409254032413815052514057
OFFSET
1,2
EXAMPLE
Some solutions for 3 X 3:
..4..0..5....4..0..1....1..2..4....3..0..5....1..4..5....4..2..1....3..0..1
..1..8..2....6..2..8....0..3..8....1..2..8....0..6..2....0..6..8....6..8..2
..3..6..7....3..5..7....7..6..5....4..6..7....3..8..7....3..5..7....4..5..7
CROSSREFS
Diagonal of A189186.
Sequence in context: A332119 A261826 A184688 * A297517 A116877 A380640
KEYWORD
nonn,more
AUTHOR
R. H. Hardin, Apr 18 2011
EXTENSIONS
a(9)-a(10) from Pontus von Brömssen, Aug 28 2024
STATUS
approved