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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
CROSSREFS
Sequence in context: A213107 A167190 A203353 * A036377 A237080 A035923
KEYWORD
nonn,fini,full
AUTHOR
Tom Edgar, May 13 2016
STATUS
approved

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Last modified March 28 08:12 EDT 2024. Contains 371236 sequences. (Running on oeis4.)