A283327 - OEIS

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A283327

Number of compatible Parke-Taylor factors for the graph obtained by combining n bubbles with a regular 2-gon.

%I #7 Mar 17 2017 00:22:38

%S 1,16,480,28416,2588160,347996160

%N Number of compatible Parke-Taylor factors for the graph obtained by combining n bubbles with a regular 2-gon.

%H Freddy Cachazo, Humberto Gomez, <a href="http://arxiv.org/abs/1505.03571">Computation of Contour Integrals on M_{0,n}</a>, arXiv preprint, 2015. Also JHEP, 2016; doi:10.1007/JHEP04(2016)108. See Table 1.

%K nonn,more

%O 1,2

%A _N. J. A. Sloane_, Mar 17 2017