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%I #3 Feb 24 2013 16:10:38
%S 2,20,102,427,1668,6372,24230,92279,352596
%N Number of (n+2)X1 arrays of occupancy after each element moves up to +-n places but not 0
%C Row 2 of A222555
%e Some solutions for n=3
%e ..1....3....0....0....2....0....0....2....1....2....0....0....3....2....1....1
%e ..3....0....0....1....0....2....0....1....1....1....1....3....0....0....0....0
%e ..0....1....3....0....2....1....4....1....1....0....2....0....0....3....4....3
%e ..0....1....1....1....1....1....0....1....2....1....0....1....2....0....0....0
%e ..1....0....1....3....0....1....1....0....0....1....2....1....0....0....0....1
%K nonn
%O 1,1
%A _R. H. Hardin_ Feb 24 2013
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