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A273183 The H_3-Eulerian numbers. 1
1, 59, 59, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

a(n) is the number of elements of the Weyl group H_3 that have a descent set of size n.

Sum_{n=0..3} a(n) = 120, which is the order of the group H_3.

REFERENCES

T. K. Petersen, Eulerian Numbers, Birkhauser, 2015, Table 11.5.

LINKS

Table of n, a(n) for n=0..3.

CROSSREFS

Cf. A008292, A060187, A066094, A273000, A273035, A273036, A273181.

Sequence in context: A119945 A054379 A278372 * A292093 A104916 A172462

Adjacent sequences:  A273180 A273181 A273182 * A273184 A273185 A273186

KEYWORD

nonn,fini,full

AUTHOR

Tom Edgar, May 17 2016

STATUS

approved

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Last modified February 17 20:22 EST 2019. Contains 320223 sequences. (Running on oeis4.)