OFFSET
1,1
COMMENTS
Column 4 of A231263
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 31*a(n-1) -364*a(n-2) +2570*a(n-3) -12609*a(n-4) +44731*a(n-5) -117554*a(n-6) +227260*a(n-7) -319008*a(n-8) +314816*a(n-9) -208992*a(n-10) +83456*a(n-11) -14336*a(n-12)
EXAMPLE
Some solutions for n=3
..0..0..0..1..1....0..0..0..0..0....0..0..1..1..1....0..0..1..1..1
..0..0..1..2..2....0..0..0..1..1....0..1..0..0..0....0..1..0..0..2
..1..1..2..1..1....1..1..1..2..2....1..0..2..2..2....1..0..0..2..0
..2..2..1..1..1....2..2..2..2..2....0..2..2..2..2....2..2..2..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 06 2013
STATUS
approved