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A290946 Number of chambers of Hassett's decomposition of the weight domain of the moduli space of genus 0 n-pointed curves. 0
1, 27, 1087, 105123, 31562520, 33924554539, 140306938682875 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,2

COMMENTS

a(n) is also the number of goldilocks linear threshold functions on n variables. Asymptotically equal to the total number of linear threshold functions on n variables, divided by 2^n.

LINKS

Table of n, a(n) for n=3..9.

K. Ascher, C. Dube, D. Gershenson, E. Hou, Enumerating Hassett's wall and chamber decomposition of the moduli space of weighted stable curves, arXiv:1709.03663 [math.AG], 2017.

FORMULA

a(n) ~ 2^(n^2 - n log n + O(n)).

CROSSREFS

Cf. A000609, A000615, A109456.

Sequence in context: A143705 A222440 A159457 * A223552 A104206 A163568

Adjacent sequences:  A290943 A290944 A290945 * A290947 A290948 A290949

KEYWORD

nonn,hard,more

AUTHOR

Connor Halleck-Dube, Oct 20 2017

STATUS

approved

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Last modified February 24 03:21 EST 2018. Contains 299595 sequences. (Running on oeis4.)