OFFSET
1,1
COMMENTS
Column 4 of A297823.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 5*a(n-1) -7*a(n-2) +4*a(n-3) -a(n-5) -8*a(n-6) -35*a(n-7) +29*a(n-8) +32*a(n-9) +39*a(n-10) -35*a(n-11) -31*a(n-12) +5*a(n-13) +14*a(n-14) -3*a(n-15) -14*a(n-16) +2*a(n-17) +4*a(n-18) for n>21
EXAMPLE
Some solutions for n=7
..0..1..0..1. .0..1..1..1. .0..0..1..0. .0..1..0..0. .0..0..1..1
..1..0..1..0. .1..0..0..1. .0..1..1..0. .0..1..1..0. .1..1..0..0
..1..0..1..0. .0..1..1..0. .1..0..0..1. .1..0..0..1. .0..1..0..1
..0..0..1..0. .1..0..0..1. .1..1..1..1. .0..1..1..0. .0..1..0..1
..1..0..1..0. .0..1..1..1. .0..0..0..0. .1..0..0..0. .1..0..0..1
..1..0..1..1. .0..0..0..0. .0..1..1..0. .1..1..1..1. .1..1..1..1
..1..1..0..0. .1..1..1..1. .1..0..1..0. .0..0..0..0. .0..0..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 06 2018
STATUS
approved