%I A092187
%S A092187 1,1,4,6,36,72,576,1440,14400,43200,518400,1814400,25401600,101606400,
               1625702400,
%T A092187 7315660800,131681894400,658409472000,13168189440000,72425041920000,1593350922240000,
%U A092187 9560105533440000,229442532802560000,1491376463216640000,38775788043632640000
%N A092187 A092186(n)/2.
%Y A092187 Sequence in context: A164127 A071394 A137021 this_sequence A092765 A056315 
               A103234
%Y A092187 Adjacent sequences: A092184 A092185 A092186 this_sequence A092188 A092189 
               A092190
%K A092187 nonn
%O A092187 2,3
%A A092187 N. J. A. Sloane (njas(AT)research.att.com), Apr 02 2004