0,2

Table of n, a(n) for n=0..6.

(empirical) set p,q,r to n,9,9 (in any order) in s=p+q+r-1; a(n) = product {i in 0..r-1} (binomial(s,p+i)*i!/(s-i)^(r-i-1))

Sequence in context: A024761 A245862 A177313 * A177314 A177315 A172613

Adjacent sequences: A140921 A140922 A140923 * A140925 A140926 A140927

nonn

R. H. Hardin, Jul 05 2008

approved