OFFSET
1,3
COMMENTS
Column 3 of A282838.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 6*a(n-1) +6*a(n-2) -40*a(n-3) -147*a(n-4) +90*a(n-5) +690*a(n-6) +1104*a(n-7) +153*a(n-8) -358*a(n-9) -534*a(n-10) +216*a(n-11) -617*a(n-12) +606*a(n-13) -330*a(n-14) +224*a(n-15) -84*a(n-16) +24*a(n-17) -8*a(n-18)
EXAMPLE
Some solutions for n=4
..0..0..1. .1..0..1. .0..1..0. .0..1..0. .1..0..0. .1..0..1. .1..0..0
..1..1..0. .0..0..1. .0..1..0. .0..0..1. .1..0..0. .1..0..1. .0..1..1
..0..0..0. .1..1..0. .0..1..0. .0..1..0. .1..0..1. .0..0..1. .0..0..0
..1..1..1. .0..0..1. .1..0..0. .1..0..0. .1..0..0. .1..0..1. .1..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 22 2017
STATUS
approved