A119668 - OEIS

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A119668

Number of chambers in root systems of type A_n.

0

1, 2, 7, 48, 820, 44288

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OFFSET

1,2

LINKS

Table of n, a(n) for n=1..6.

M. Welleda Baldoni et al., Volume computation for polytopes and partition functions for classical root systems, arXiv:math/0504231 [math.CO], 2005; Discr. Comput. Geom., 35 (No. 4, 2006), 551-595.

Samuel C. Gutekunst, Karola Mészáros, T. Kyle Petersen, Root Cones and the Resonance Arrangement, arXiv:1903.06595 [math.CO], 2019.

CROSSREFS

Sequence in context: A281263 A206153 A326338 * A101538 A045598 A293043

Adjacent sequences: A119665 A119666 A119667 * A119669 A119670 A119671

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Jun 12 2006

STATUS

approved