%I A055351
%S A055351 30,1500,47250,1234800,29635200,685843200,15717240000,362244960000,
%T A055351 8476532064000,202580554176000,4963223577312000,124948285862400000,
%U A055351 3236755595673600000,86346680044584960000,2372991796225290240000
%N A055351 Number of labeled mobiles (circular rooted trees) with n nodes and 4 
               leaves.
%H A055351 <a href="Sindx_Mo.html#mobiles">Index entries for sequences related to 
               mobiles</a>
%Y A055351 Column 4 of A055349.
%Y A055351 Sequence in context: A107768 A048536 A000173 this_sequence A103917 A089550 
               A007804
%Y A055351 Adjacent sequences: A055348 A055349 A055350 this_sequence A055352 A055353 
               A055354
%K A055351 nonn
%O A055351 5,1
%A A055351 Christian G. Bower (bowerc(AT)usa.net), May 15 2000