%I #3 Mar 31 2012 12:35:44
%S 1,70,32154,51547778,212793102720,1884903364393901,
%T 31693834047691904775
%N Number of permutations of 4 copies of 1..n avoiding adjacent step pattern up, down, up, down, down
%K nonn
%O 1,2
%A _R. H. Hardin_ May 10 2010
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