A273181 The F_4-Eulerian numbers.

1, 236, 678, 236, 1

Offset

0,2

Comments

a(n) is the number of elements of the Weyl group F_4 that have a descent set of size n.

Sum_{n=0..4} a(n) = 1152, which is the order of the group F_4.

References

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

Links

Table of n, a(n) for n=0..4.

Crossrefs

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

Sequence in context: A235286 A138818 A138819 * A259639 A334649 A233983

Adjacent sequences: A273178 A273179 A273180 * A273182 A273183 A273184

Keyword

nonn,fini,full

Author

Tom Edgar, May 17 2016

Status

approved