OFFSET
0,3
LINKS
Alois P. Heinz, Table of n, a(n) for n = 0..50
FORMULA
a(n) ~ 3*sqrt(Pi) * (9^8/8!)^n * n^(9*n+1/2) / (2^(9/2) * exp(9*n) * (log(2))^(9*n+1)). - Vaclav Kotesovec, Mar 23 2016
MATHEMATICA
With[{r = 9}, Flatten[{1, Table[Sum[Sum[(-1)^i*Binomial[j, i]*Binomial[j - i, r]^k, {i, 0, j}], {j, 0, k*r}], {k, 1, 10}]}]] (* Vaclav Kotesovec, Mar 22 2016 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Oct 08 2015
STATUS
approved