0,2
Table of n, a(n) for n=0..18.
(empirical) set p,q,r to n,6,4 (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: A185042 A023905 A035840 * A092711 A187308 A229754
Adjacent sequences: A140901 A140902 A140903 * A140905 A140906 A140907
nonn
R. H. Hardin, Jul 05 2008
approved