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%I #8 Sep 14 2013 02:21:29
%S 0,7,161,17957,6839199,9594137076
%N Number of triangular nXnXn arrays of occupancy after each element moves to some neighbor and with no occupancy greater than 3.
%C Column 3 of A217245
%e Some solutions for n=4
%e .....0........0........1........1........2........1........2........1
%e ....1.1......2.3......0.3......0.2......2.0......0.1......1.1......1.1
%e ...0.2.1....1.1.1....2.0.1....0.2.1....1.0.0....2.2.1....2.3.1....2.0.1
%e ..0.3.0.2..0.0.0.2..1.0.0.2..2.1.0.1..0.2.1.2..0.2.1.0..0.0.0.0..1.2.0.1
%K nonn,hard,more
%O 1,2
%A _R. H. Hardin_ Sep 28 2012
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