%I #3 Mar 31 2012 12:35:45
%S 0,6,24,90,360,1680,7840,36960,184800,924000,4643100,24144120,
%T 125621496,655350696,3495203712
%N Number of permutations of 1..n with the sequence of sums of 3 adjacent elements having exactly 1 maximum
%K nonn
%O 2,2
%A _R. H. Hardin_ Jul 25 2010