OFFSET
1,1
COMMENTS
Column 2 of A206128
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 5*a(n-1) +24*a(n-2) -109*a(n-3) -170*a(n-4) +664*a(n-5) +290*a(n-6) -954*a(n-7) -69*a(n-8) +1074*a(n-9) -119*a(n-10) -639*a(n-11) +479*a(n-12) +61*a(n-13) -299*a(n-14) +97*a(n-15) +36*a(n-16) -24*a(n-17) +4*a(n-18) for n>19
EXAMPLE
Some solutions for n=4
..2..1..0....1..2..0....2..2..1....0..2..0....0..1..2....2..0..1....2..1..1
..2..2..2....1..0..1....2..1..1....1..2..2....1..0..1....2..1..2....2..2..1
..2..1..2....0..1..2....1..1..2....1..1..2....2..1..0....0..2..1....1..2..2
..0..1..1....2..2..0....1..2..2....0..1..1....1..0..2....1..0..2....2..2..1
..1..1..0....1..0..1....1..1..2....1..1..0....2..1..0....2..1..0....2..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 04 2012
STATUS
approved