0,2

Table of n, a(n) for n=0..4.

(empirical) set p,q,r to n,11,11 (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: A273969 A203834 A234701 * A134615 A186607 A249195

Adjacent sequences: A140940 A140941 A140942 * A140944 A140945 A140946

nonn

R. H. Hardin, Jul 05 2008

approved