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Number of nX7 array permutations with each element making a single king move
1

%I #5 Mar 31 2012 12:36:14

%S 0,24577,9925824,24377674329,30863909708032,51019657551661825,

%T 76260881288534294528,118756821701162151227761,

%U 182058599536052537764772096,280897765265782382194137678153

%N Number of nX7 array permutations with each element making a single king move

%C Column 7 of A189186

%H R. H. Hardin, <a href="/A189184/b189184.txt">Table of n, a(n) for n = 1..46</a>

%e Some solutions for 3X7

%e ..1..0..3..2.10..6.12....1..0..3..2..5..4.13....1..0..3..2..5..6.13

%e .14..7.17..4..5.20.19...14.16..8.11.18.19..6...14..9..8.17.18..4.20

%e .15..9..8.16.11.18.13...15..7..9.10.17.20.12....7.16.15.10.11.12.19

%K nonn

%O 1,2

%A _R. H. Hardin_ Apr 18 2011