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%I #2 Mar 31 2012 13:20:12
%S 1,1,9,193,5881,212529,8467113,359065953,15899869785,726714474385,
%T 34027390026505,1623911649356481,78700579447559353,
%U 3862817734061600497,191625298483691960169,9592547730682848672801,483950907590044260965145
%N Generalized Catalan numbers C(2,7;n)=C(7,2;n).
%C See A116873 for C(2,3;n) and the Derrida et al., Schuetz-Domany and Liggett references.
%F G.f.: (3+25*x+56*x^2*c(14*x))/((1+7*x)*(3+x)) with the g.f. c(x) for A000108 (Catalan numbers).
%K nonn,easy
%O 0,3
%A _Wolfdieter Lang_, Mar 24 2006
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