OFFSET
1,1
COMMENTS
Column 3 of A297907.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = a(n-1) +2*a(n-2) +5*a(n-3) -4*a(n-4) -7*a(n-5) -6*a(n-6) +5*a(n-7) +4*a(n-8) +a(n-9) -2*a(n-10) +a(n-11) +a(n-12) for n>13
EXAMPLE
Some solutions for n=7
..0..1..1. .0..0..1. .0..0..1. .0..1..1. .0..0..1. .0..0..1. .0..0..1
..0..1..1. .0..0..1. .0..0..1. .0..1..1. .0..0..1. .0..0..1. .0..0..1
..0..0..1. .0..1..1. .0..1..1. .0..0..1. .1..1..1. .0..1..1. .0..1..1
..0..1..1. .0..0..1. .0..1..0. .0..1..1. .0..0..1. .1..0..1. .0..1..1
..0..0..1. .0..1..1. .1..1..0. .0..1..1. .0..0..1. .0..0..1. .0..0..0
..0..1..1. .0..0..1. .1..0..0. .0..0..1. .0..1..1. .0..1..1. .0..1..1
..0..1..1. .0..0..1. .1..0..0. .0..0..1. .0..1..1. .0..1..1. .0..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 08 2018
STATUS
approved