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 A209537 Number of n X n array permutations with every element making zero or one right-handed knight moves (out 2, right 1) 0
 1, 1, 16, 729, 103680, 92160000, 366400000000, 6638067426640896 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS Diagonal of A209543 LINKS EXAMPLE Some solutions for n=4 ..6..8..2..3....6..8..2..3....0..7..2..3....6..7..2..3....0..8..2.10 ..4.11..0.14....4..5..0.14...10.12..6..1...10..5..0.14....4.12.13..1 ..1..9.10..5....1..9.10.11...14..9..4.11....1.15..4.11...14..9..3.11 .12.13..7.15...12.13..7.15....5.13..8.15...12.13..8..9....5..6..7.15 CROSSREFS Sequence in context: A221023 A171736 A062206 * A086701 A218297 A339202 Adjacent sequences: A209534 A209535 A209536 * A209538 A209539 A209540 KEYWORD nonn AUTHOR R. H. Hardin Mar 10 2012 STATUS approved

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Last modified November 27 00:20 EST 2022. Contains 358362 sequences. (Running on oeis4.)