A273183 The H_3-Eulerian numbers.

1, 59, 59, 1

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