%I #29 Nov 08 2023 14:55:15
%S 1,8,80,992,13760,204416,3180800,51176960,844467200,14212646912,
%T 243034542080,4210466545664,73745071063040,1303643374125056,
%U 23229596506849280,416799595720736768,7523942192296755200,136549608206371389440,2490043714311736524800,45601540046865462984704
%N Bicolored noncrossing configurations.
%H F. Chapoton, S. Giraudo, <a href="http://arxiv.org/abs/1310.4521">Enveloping operads and bicoloured noncrossing configurations</a>, arXiv preprint arXiv:1310.4521 [math.CO], 2013. See Prop. 2.9.
%H Samuele Giraudo, <a href="https://arxiv.org/abs/1709.08416">Combalgebraic structures on decorated cliques</a>, Formal Power Series and Algebraic Combinatorics, Séminaire Lotharingien de Combinatoire, 78B.15, 2017, p. 8; arXiv:1709.08416 [math.CO], 2017.
%F For a g.f. see F. Chapoton, S. Giraudo (2013), Prop. 2.9.
%F G.f.: 1/6*(1-4*t-sqrt(1-20*t+4*t^2)). - _Paul Laubie_, Nov 08 2023
%o (Sage) R.<t>=PowerSeriesRing(QQ); (1/6*(1-4*t-sqrt(1-20*t+4*t^2))).list()[1:]
%K nonn
%O 1,2
%A _N. J. A. Sloane_, Jan 04 2014
%E More terms from _Paul Laubie_, Nov 08 2023