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A273035
The E_7-Eulerian numbers.
4
1, 17635, 309969, 1123915, 1123915, 309969, 17635, 1
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.
CROSSREFS
KEYWORD
nonn,fini,full
AUTHOR
Tom Edgar, May 13 2016
STATUS
approved