OFFSET
0,4
LINKS
Seiichi Manyama, Table of n, a(n) for n = 0..78
FORMULA
a(n) ~ sqrt(8) * 131072^n * n^(7*n) / (315^n * exp(7*n + 7)). - Vaclav Kotesovec, Nov 24 2018
EXAMPLE
Some solutions for n=3
..1....1....1....1....1....1....1....1....1....1....1....1....1....1....1....1
..2....2....2....2....2....2....2....2....2....2....2....2....2....2....2....2
..1....1....1....1....1....1....1....1....1....1....1....1....1....1....1....1
..2....2....2....3....2....3....2....2....3....2....2....2....3....2....2....2
..3....3....3....1....3....1....1....1....1....1....1....3....1....3....3....3
..2....1....1....3....1....2....2....3....2....3....3....1....3....1....2....1
..3....3....2....1....2....1....3....2....3....1....1....3....1....3....3....2
..1....2....3....2....1....2....1....1....2....3....3....2....2....2....2....3
..3....1....1....1....3....1....2....3....3....2....1....1....3....3....3....2
..1....3....2....2....2....2....1....2....1....1....2....3....1....1....2....3
..2....1....1....1....3....3....3....1....3....3....1....2....3....3....3....1
..1....3....3....3....1....1....1....2....1....2....2....3....2....2....1....3
..2....2....1....2....3....3....2....3....3....3....3....2....3....3....2....2
..3....3....3....3....1....1....3....1....2....2....2....3....2....2....1....3
..1....1....2....2....3....3....2....3....1....3....3....1....1....3....2....1
..3....3....3....3....2....2....3....2....3....2....1....3....3....1....3....3
..2....2....1....1....3....3....1....3....2....1....2....1....2....3....1....2
..1....3....3....3....2....2....3....2....3....3....3....2....1....2....3....1
..3....2....2....2....3....1....1....1....2....2....2....1....2....3....1....2
..2....1....3....3....1....3....3....3....3....3....3....3....3....1....3....3
..3....2....1....2....2....2....2....1....2....1....1....1....2....2....1....1
..1....3....2....3....1....3....3....3....1....3....3....2....1....1....3....3
..2....2....3....1....3....2....2....2....2....2....2....3....3....2....2....2
..3....1....2....2....2....3....3....3....1....1....3....2....2....1....1....1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin May 21 2011
EXTENSIONS
a(0)=1 prepended and a(7)-a(9) added by Seiichi Manyama, Nov 16 2018
STATUS
approved