%I A151602
%S A151602 0,264,19386752,51689441800,44408699858208,22152650667809256
%N A151602 Number of permutations of 4 indistinguishable copies of 1..n arranged 
               in a circle with exactly 7 adjacent element pairs in decreasing order.
%Y A151602 Sequence in context: A013974 A145639 A116501 this_sequence A051976 A146335 
               A094795
%Y A151602 Adjacent sequences: A151599 A151600 A151601 this_sequence A151603 A151604 
               A151605
%K A151602 nonn
%O A151602 2,2
%A A151602 Ron Hardin (rhhardin(AT)att.net) May 21 2009