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A273035 The E_7-Eulerian numbers. 4
1, 17635, 309969, 1123915, 1123915, 309969, 17635, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

a(n) is the number of elements of the Weyl group E_7 that have a descent set of size n.

Sum_{n=0..7} a(n) = 2903040, which is the order of the group E_7.

REFERENCES

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

LINKS

Table of n, a(n) for n=0..7.

CROSSREFS

Cf. A008292, A060187, A066094, A273000.

Sequence in context: A213107 A167190 A203353 * A036377 A237080 A035923

Adjacent sequences:  A273032 A273033 A273034 * A273036 A273037 A273038

KEYWORD

nonn,fini,full

AUTHOR

Tom Edgar, May 13 2016

STATUS

approved

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Last modified July 17 20:45 EDT 2019. Contains 325109 sequences. (Running on oeis4.)