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Number of permutations of 7..n+6 with no element greater than or equal to the sum of its neighbors
0

%I #2 Mar 31 2012 12:35:48

%S 1,0,2,6,30,180,1260,10080,88200,846360,8704560,96521328,1136939886,

%T 14300688576,190022230230,2677680493446,39679534875572,619978024613994

%N Number of permutations of 7..n+6 with no element greater than or equal to the sum of its neighbors

%K nonn

%O 1,3

%A _R. H. Hardin_ Sep 23 2010