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%I #12 Dec 01 2018 19:33:25
%S 720,5242,44304,399848,3661824,33461568,305193408,2779045440
%N Number of permutations of 1..2*n+6 with no adjacent elements within n in value.
%K nonn,more
%O 0,1
%A _R. H. Hardin_, Aug 03 2010
%E a(0)=720 prepended by _Seiichi Manyama_, Dec 01 2018
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