OFFSET
1,1
COMMENTS
Column 4 of A263060.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 21*a(n-1) +189*a(n-2) -3969*a(n-3) -10719*a(n-4) +225099*a(n-5) +250803*a(n-6) -5266863*a(n-7) -2527200*a(n-8) +53071200*a(n-9) +9062928*a(n-10) -190321488*a(n-11)
EXAMPLE
Some solutions for n=3
..1..0..0..1..1....0..0..0..1..0....0..0..1..1..1....0..0..0..0..1
..0..0..1..0..0....1..1..0..0..1....1..1..0..0..1....1..0..1..0..0
..1..1..0..1..0....1..1..1..0..0....0..1..0..1..1....0..1..1..1..0
..0..0..0..1..0....1..1..0..0..1....0..1..0..1..0....1..0..1..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Oct 08 2015
STATUS
approved