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A283327
Number of compatible Parke-Taylor factors for the graph obtained by combining n bubbles with a regular 2-gon.
0
1, 16, 480, 28416, 2588160, 347996160
OFFSET
1,2
LINKS
Freddy Cachazo, Humberto Gomez, Computation of Contour Integrals on M_{0,n}, arXiv preprint, 2015. Also JHEP, 2016; doi:10.1007/JHEP04(2016)108. See Table 1.
CROSSREFS
Sequence in context: A300256 A239401 A254633 * A185367 A209352 A209392
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Mar 17 2017
STATUS
approved