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A191015 Number of isomorphism classes of Coxeter systems with n reflections 1
1, 1, 2, 3, 4, 7, 9, 12, 18, 25, 32, 47, 61, 79, 108, 143, 182, 246, 315, 404, 526, 674, 849, 1102, 1389, 1745, 2215, 2788, 3467, 4384 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

REFERENCES

Anders Björner, Francesco Brenti, Combinatorics of Coxeter groups, Graduate Texts in Mathematics, 231. Springer, New York, 2005.

LINKS

Table of n, a(n) for n=1..30.

CROSSREFS

Sequence in context: A247186 A051061 A237870 * A181385 A188381 A005576

Adjacent sequences: A191012 A191013 A191014 * A191016 A191017 A191018

KEYWORD

nonn

AUTHOR

Matthew J. Samuel, May 24 2011

STATUS

approved

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Last modified January 29 15:06 EST 2023. Contains 359923 sequences. (Running on oeis4.)