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A283326 Number of compatible Parke-Taylor factors for the graph obtained by combining one bubble with a regular n-gon. 0
1, 6, 32, 200, 1518, 13160, 126032, 1325682 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,2

LINKS

Table of n, a(n) for n=2..9.

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: A020058 A146557 A020013 * A221540 A331878 A121120

Adjacent sequences:  A283323 A283324 A283325 * A283327 A283328 A283329

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Mar 17 2017

STATUS

approved

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Last modified October 19 21:50 EDT 2021. Contains 348095 sequences. (Running on oeis4.)