|
%I
%S 1,0,0,0,0,1,3,7,21,57,159,435,1217,3400,9633,27413,78733,227489,
%T 661984,1937211,5701733,16865522,50126650,149627241,448448400,
%U 1349060262,4072508115,12333762442,37466367898,114133581762
%N Number of asymmetric 2,3 cacti (triangular cacti with bridges).
%H <a href="/index/Ca#cacti">Index entries for sequences related to cacti</a>
%F G.f.: A(x) = B(x)-B(x)^2/2-B(x^2)/2+B(x^3)/3-B(x)^3/3 where B is g.f. of A091488
%K nonn
%O 1,7
%A _Christian G. Bower_, Jan 14 2004
|