A273000 The E_6-Eulerian numbers.

1, 1272, 12183, 24928, 12183, 1272, 1

Offset

0,2

Comments

a(n) is the number of elements of the Weyl group E_6 that have a descent set of size n.

Sum_{n=0..6} a(n) = 51840, which is the order of the group E_6.

References

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

Links

Table of n, a(n) for n=0..6.

Crossrefs

Cf. A008292, A060187, A066094.

Sequence in context: A152507 A203100 A351678 * A282328 A187465 A325604

Adjacent sequences: A272997 A272998 A272999 * A273001 A273002 A273003

Keyword

nonn,fini,full

Author

Tom Edgar, May 12 2016

Status

approved