OFFSET
0,2
COMMENTS
Number of ascending runs in {1,...,n}^10.
LINKS
Alois P. Heinz, Table of n, a(n) for n = 0..1000
Index entries for linear recurrences with constant coefficients, signature (11,-55,165,-330,462,-462,330,-165,55,-11,1).
FORMULA
G.f.: -(x^9 +3317*x^8 +199643*x^7 +2172239*x^6 +6901145*x^5 +7512749*x^4 +2834873*x^3 +326597*x^2 +7826*x +10)*x / (x-1)^11.
MAPLE
a:= n-> n^9*(11*n+9)/2:
seq(a(n), n=0..40);
MATHEMATICA
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Alois P. Heinz, Sep 15 2013
STATUS
approved