%I #3 Mar 30 2012 18:36:55
%S 1,1,2,4,9,22,55,141,371,997,2712,7440,20542,57056,159343,447045,
%T 1259443,3561529,10119910,28892841,82727805,237322575,681862156,
%U 1961930899,5653182325,16312268162,47133250093,136366337701
%N Central terms of the rows of triangle A115323.
%C Limit a(n+1)/a(n) = 3.
%K nonn
%O 0,3
%A _Paul D. Hanna_, Jan 20 2006
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