OFFSET
1,1
COMMENTS
Column 4 of A295781.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 4*a(n-1) +6*a(n-2) +6*a(n-3) -58*a(n-4) -20*a(n-5) +29*a(n-6) -92*a(n-7) +7*a(n-8) +2*a(n-9) -2*a(n-10)
EXAMPLE
Some solutions for n=7
..0..0..0..0. .0..0..0..1. .0..0..1..1. .0..0..1..0. .0..0..0..1
..0..1..0..0. .0..0..0..0. .1..0..1..0. .1..0..0..0. .1..1..0..0
..1..1..0..0. .1..0..0..0. .0..0..0..0. .0..0..1..0. .0..1..0..1
..0..0..0..0. .0..0..0..1. .0..0..0..1. .0..1..1..0. .0..0..0..0
..0..0..0..1. .0..1..0..0. .0..0..0..0. .0..0..0..0. .0..0..1..0
..1..1..0..0. .0..0..0..0. .1..1..0..1. .0..1..0..0. .0..0..0..0
..1..0..0..0. .1..0..0..0. .0..1..0..0. .1..1..0..1. .1..0..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 27 2017
STATUS
approved