OFFSET
1,1
COMMENTS
Column 1 of A205055
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 8*a(n-1) -19*a(n-2) +5*a(n-3) +55*a(n-4) -130*a(n-5) +110*a(n-6) +76*a(n-7) -206*a(n-8) +143*a(n-9) -127*a(n-10) +149*a(n-11) -69*a(n-12) +26*a(n-13) -34*a(n-14) +18*a(n-15) -7*a(n-16) -3*a(n-17) +10*a(n-18) -4*a(n-19) for n>21
EXAMPLE
Some solutions for n=4
..0..0....1..1....2..1....0..1....1..2....2..1....2..0....2..1....2..2....2..1
..1..0....0..0....2..2....2..1....2..0....2..0....1..0....0..1....2..1....0..2
..1..1....0..0....1..2....0..2....0..1....0..0....0..0....0..0....2..1....1..0
..2..0....0..0....0..0....0..1....2..0....0..0....0..0....1..0....0..0....2..1
..2..1....0..0....1..0....2..0....0..1....0..0....0..0....2..0....0..0....1..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 21 2012
STATUS
approved