A179711 - OEIS

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

%S 0,6,60,500,3640,25410,172620,1164492,7850304,53178972,362810448,

%T 2495592528,17313238800,121098656250

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

%K nonn

%O 3,2

%A _R. H. Hardin_ Jul 25 2010