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Number of permutations of 1..n with the sequence of sums of 3 adjacent elements having exactly 2 maxima
0

%I #3 Mar 31 2012 12:35:45

%S 0,30,360,2940,24640,211680,1789200,15222900,131670000,1153872720,

%T 10247485248

%N Number of permutations of 1..n with the sequence of sums of 3 adjacent elements having exactly 2 maxima

%K nonn

%O 4,2

%A _R. H. Hardin_ Jul 25 2010