%I A151632
%S A151632 0,9,405,6750,83736,922347,9639783,98361900,992660346
%N A151632 Number of permutations of 3 indistinguishable copies of 1..n with exactly 
               2 adjacent element pairs in decreasing order.
%Y A151632 Sequence in context: A063876 A063156 A058850 this_sequence A035024 A091061 
               A024123
%Y A151632 Adjacent sequences: A151629 A151630 A151631 this_sequence A151633 A151634 
               A151635
%K A151632 nonn
%O A151632 1,2
%A A151632 Ron Hardin (rhhardin(AT)att.net) May 29 2009