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A116877
Generalized Catalan numbers C(2,7;n)=C(7,2;n).
0
1, 1, 9, 193, 5881, 212529, 8467113, 359065953, 15899869785, 726714474385, 34027390026505, 1623911649356481, 78700579447559353, 3862817734061600497, 191625298483691960169, 9592547730682848672801, 483950907590044260965145
OFFSET
0,3
COMMENTS
See A116873 for C(2,3;n) and the Derrida et al., Schuetz-Domany and Liggett references.
FORMULA
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).
CROSSREFS
Sequence in context: A184688 A189178 A297517 * A196959 A266485 A279132
KEYWORD
nonn,easy
AUTHOR
Wolfdieter Lang, Mar 24 2006
STATUS
approved