%I #6 Dec 18 2015 18:18:04
%S 1,1,16,729,103680,92160000,366400000000,6638067426640896
%N Number of n X n array permutations with every element making zero or one right-handed knight moves (out 2, right 1)
%C Diagonal of A209543
%e Some solutions for n=4
%e ..6..8..2..3....6..8..2..3....0..7..2..3....6..7..2..3....0..8..2.10
%e ..4.11..0.14....4..5..0.14...10.12..6..1...10..5..0.14....4.12.13..1
%e ..1..9.10..5....1..9.10.11...14..9..4.11....1.15..4.11...14..9..3.11
%e .12.13..7.15...12.13..7.15....5.13..8.15...12.13..8..9....5..6..7.15
%K nonn
%O 1,3
%A _R. H. Hardin_ Mar 10 2012