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%I #6 May 12 2023 15:37:37
%S 35,1104,31185,782336,17015665,311027162,5208624406,85171286099
%N Number of n X 2 1..6 arrays with no element with value z exactly a city block distance of z from another element with value z.
%C Column 2 of A209182.
%e Some solutions for n=6
%e ..3..5....4..4....6..3....6..6....2..6....5..6....6..4....3..1....5..1....3..3
%e ..4..1....6..4....5..3....1..4....5..5....6..4....2..6....2..3....2..3....5..6
%e ..5..5....4..6....1..6....2..6....5..5....4..5....4..6....4..6....4..6....1..2
%e ..2..4....1..5....6..4....6..1....5..4....2..6....6..4....5..1....4..3....4..4
%e ..6..5....2..5....4..1....1..5....2..3....5..3....6..6....3..5....3..6....4..3
%e ..3..3....6..1....6..2....4..2....2..6....3..2....4..2....6..5....1..3....3..6
%Y Cf. A209182.
%K nonn
%O 1,1
%A _R. H. Hardin_, Mar 05 2012