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%I #11 Mar 30 2012 17:37:11
%S 1,4,16,46,118,260,527,985,1741,2918,4701,7299,11004,16142,23148,
%T 32502,44823,60786,81238,107098,139492,179632,228979,289097,361841,
%U 449188,553453,677093,822954,994044,1193814,1425902,1694445,2003790
%N Number of mobiles (circular rooted trees) with n nodes and 4 leaves.
%H <a href="/index/Mo#mobiles">Index entries for sequences related to mobiles</a>
%F Conjecture: G.f. x^5*( -1-x-5*x^2-6*x^3-9*x^4-5*x^5-2*x^6-2*x^7+x^9 ) / ( (x^2+1)*(1+x+x^2) *(1+x)^3 *(x-1)^7 ). - R. J. Mathar, Sep 18 2011
%Y Column 4 of A055340.
%K nonn
%O 5,2
%A _Christian G. Bower_, May 14 2000
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