OFFSET
1,1
COMMENTS
Also denominator of x(n)=Sum(x(k)*x(n-k-1):0<=k<n), x(0)=1/2: x(n)=A098597(n)/a(n+2). - Reinhard Zumkeller, Feb 06 2008
LINKS
Eric Weisstein's World of Mathematics, Binomial Distribution
MATHEMATICA
Denominator[Table[If[OddQ[n], n!!/2/(n-1)!!, (n-1)!!/2/(n-2)!! ], {n, 50}]]
CROSSREFS
KEYWORD
nonn,frac
AUTHOR
Eric W. Weisstein, Jul 10 2003
STATUS
approved