OFFSET
1,2
COMMENTS
Column 3 of A281988.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 6*a(n-1) +5*a(n-2) -48*a(n-3) -41*a(n-4) +76*a(n-5) +53*a(n-6) -94*a(n-7) +35*a(n-8) +188*a(n-9) -90*a(n-10) -98*a(n-11) +106*a(n-12) +22*a(n-13) -182*a(n-14) +60*a(n-15) +8*a(n-16) -72*a(n-17) +12*a(n-18) -9*a(n-20) for n>23
EXAMPLE
Some solutions for n=4
..0..1..1. .0..0..1. .0..0..1. .0..1..1. .0..1..0. .0..0..0. .0..1..1
..0..1..0. .0..1..1. .1..1..0. .1..0..0. .0..0..1. .0..1..0. .0..0..1
..0..1..0. .0..0..0. .1..0..1. .1..1..0. .1..1..1. .0..0..0. .1..1..0
..1..1..1. .1..0..0. .0..0..1. .1..0..1. .1..1..1. .0..0..0. .1..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 04 2017
STATUS
approved