A116876 Generalized Catalan numbers C(2,6;n)=C(6,2;n).

1, 1, 8, 148, 3872, 120016, 4099712, 149049664, 5657960960, 221678337280, 8897559799808, 363982704071680, 15120552582127616, 636153538316259328, 27050546920814968832, 1160701969453516668928, 50193802774799009841152

Offset

0,3

Comments

See A116873 for C(2,3;n) and the Derrida et al., Schuetz-Domany and Liggett references.

Links

Table of n, a(n) for n=0..16.

Formula

G.f.: (5+37*x+84*x^2*c(12*x))/((1+6*x)*(5+2*x)) with the g.f. c(x) for A000108 (Catalan numbers).

Crossrefs

Sequence in context: A212732 A220297 A307942 * A218305 A244028 A075351

Adjacent sequences: A116873 A116874 A116875 * A116877 A116878 A116879

Keyword

nonn,easy

Author

Wolfdieter Lang, Mar 24 2006

Status

approved