OFFSET
0,5
LINKS
Alois P. Heinz, Table of n, a(n) for n = 0..463
FORMULA
a(n) ~ c * 3^(3*n/2) * n^(n+3/2) / (exp(n) * 2^n * Pi^n), where c = 0.827206526063705458546024... . - Vaclav Kotesovec, Dec 11 2016
CROSSREFS
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Nov 29 2016
STATUS
approved