OFFSET
1,1
COMMENTS
Column 7 of A268971.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 84*a(n-1) -2466*a(n-2) +31428*a(n-3) -206469*a(n-4) +750384*a(n-5) -1513404*a(n-6) +1574640*a(n-7) -656100*a(n-8)
EXAMPLE
Some solutions for n=2
..2..2..1..0..1..2..2. .1..2..0..1..0..0..0. .0..1..2..1..0..1..0
..1..0..1..2..1..2..0. .2..1..0..0..0..0..0. .2..1..2..1..2..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 16 2016
STATUS
approved