OFFSET
1,1
COMMENTS
Column 3 of A203452
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 13*a(n-1) -76*a(n-2) +262*a(n-3) -583*a(n-4) +847*a(n-5) -726*a(n-6) +132*a(n-7) +561*a(n-8) -869*a(n-9) +704*a(n-10) -362*a(n-11) +119*a(n-12) -23*a(n-13) +2*a(n-14) for n>17
EXAMPLE
Some solutions for n=7
..0..0..0..0....0..0..0..0....0..0..0..1....0..0..0..0....0..0..0..0
..0..0..0..1....0..0..0..1....0..0..0..1....0..0..1..1....0..0..0..0
..0..0..1..0....0..0..1..1....0..0..0..1....0..0..1..1....0..0..0..1
..0..0..1..0....0..1..0..1....0..0..1..0....0..1..0..1....0..0..0..1
..0..0..1..1....1..0..1..1....0..0..1..1....0..1..1..0....0..0..1..0
..0..1..0..0....1..0..1..1....0..1..1..0....1..1..0..0....0..0..1..1
..0..1..0..0....0..1..1..0....0..1..1..0....1..1..0..0....1..1..0..0
..1..1..1..1....1..1..0..1....1..1..1..0....1..1..1..1....1..1..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 02 2012
STATUS
approved