OFFSET
1,1
COMMENTS
Column 4 of A237234
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 4*a(n-2) +3*a(n-3) +24*a(n-4) +21*a(n-5) +28*a(n-6) -64*a(n-7) -199*a(n-8) -396*a(n-9) -578*a(n-10) -30*a(n-11) -136*a(n-12) -192*a(n-13) for n>16
EXAMPLE
Some solutions for n=4
..2..0..0..1..2....1..2..2..0..1....1..1..2..2..2....0..2..2..0..1
..1..1..1..2..2....0..1..1..0..1....0..0..1..1..0....1..1..2..1..0
..2..1..1..2..2....0..1..1..1..2....2..1..1..1..0....1..0..1..2..2
..1..0..0..1..1....1..2..1..1..2....2..1..1..2..1....2..1..0..1..2
..1..0..0..0..2....2..2..0..0..0....2..0..0..1..1....1..2..0..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 05 2014
STATUS
approved