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%I #4 Oct 30 2015 07:59:57
%S 1,2,3,11,17,49,80,249,414,1237,2099,6314,10846,32254,56036,166127,
%T 291145,858237,1515675,4450576,7910979,23136531,41361393,120553201,
%U 216600707,629294119,1135763262,3290238806,5962334608,17226509737
%N Number of length n arrays of permutations of 0..n-1 with each element moved by -2 to 2 places and the total absolute value of displacements not greater than n.
%C Column 2 of A263939.
%H R. H. Hardin, <a href="/A263933/b263933.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=7
%e ..0....2....0....0....0....0....1....0....0....1....2....0....0....1....0....0
%e ..2....0....2....3....1....3....0....2....3....2....0....1....1....3....1....1
%e ..3....1....1....1....2....1....3....1....1....0....3....3....2....0....2....4
%e ..1....3....4....2....3....2....2....3....2....3....1....2....5....2....5....2
%e ..4....4....5....4....4....4....4....6....5....4....4....6....3....4....4....5
%e ..5....6....3....5....6....6....6....4....4....6....5....4....4....5....3....3
%e ..6....5....6....6....5....5....5....5....6....5....6....5....6....6....6....6
%Y Cf. A263939.
%K nonn
%O 1,2
%A _R. H. Hardin_, Oct 30 2015
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