OFFSET
0,4
LINKS
Seiichi Manyama, Table of n, a(n) for n = 0..70
FORMULA
a(n) ~ 9^(7*n + 1/2) * n^(8*n) / (4480^n * exp(8*(n+1))). - Vaclav Kotesovec, Nov 24 2018
CROSSREFS
KEYWORD
nonn
AUTHOR
Seiichi Manyama, Nov 16 2018
STATUS
approved