OFFSET
1,1
COMMENTS
Column 3 of A210413
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 81*a(n-1) +1151*a(n-2) -13041*a(n-3) -117154*a(n-4) +478740*a(n-5) +445664*a(n-6) -2873152*a(n-7) +2422784*a(n-8) -196608*a(n-9)
EXAMPLE
Some solutions for n=4
..0..0..0..0....0..0..0..1....0..0..0..0....0..0..1..0....0..0..1..1
..1..2..1..3....1..2..1..2....1..2..3..2....1..2..1..2....1..2..2..3
..1..0..0..1....2..0..1..3....2..0..2..0....0..0..1..0....3..0..3..0
..0..2..3..2....1..3..0..0....3..0..1..2....3..2..1..2....0..1..3..1
..1..1..0..3....1..0..2..3....3..2..3..1....0..0..3..1....3..2..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 21 2012
STATUS
approved