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%I #11 Dec 01 2018 19:32:14
%S 120,646,3984,25384,161136,1019616,6433728,40495488,254319360,
%T 1593945600
%N Number of permutations of 1..2*n+5 with no adjacent elements within n in value.
%K nonn,more
%O 0,1
%A _R. H. Hardin_, Aug 03 2010
%E a(0)=120 prepended by _Seiichi Manyama_, Dec 01 2018
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