OFFSET
6,1
LINKS
Alois P. Heinz, Table of n, a(n) for n = 6..250
FORMULA
a(n) ~ 3^(n+3/2) / (2*sqrt(Pi) * n^(3/2)). - Vaclav Kotesovec, Aug 31 2014
CROSSREFS
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Nov 17 2012
STATUS
approved