|
|
A291902
|
|
Sums of the cubes of the descent set statistics for permutations on n elements.
|
|
3
|
|
|
1, 1, 2, 18, 360, 14460, 994680, 109021500, 17815754880, 4147063256448, 1323985303267200, 562636176102554400, 310405397451855552000, 217731000904433587359360, 190749857434239995742090240, 205540893695782384696324368000, 268793206446238988670401236992000
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
0,3
|
|
LINKS
|
|
|
FORMULA
|
|
|
EXAMPLE
|
For n=4, we have a(4) = 1^3 + 3^3 + 5^5 + 3^3 + 3^3 + 5^3 + 3^3 + 1^3 = 360.
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
EXTENSIONS
|
|
|
STATUS
|
approved
|
|
|
|