OFFSET
1,2
COMMENTS
Column 3 of A299528.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 2*a(n-1) +3*a(n-2) +18*a(n-3) -36*a(n-4) -45*a(n-5) -51*a(n-6) +111*a(n-7) +88*a(n-8) +94*a(n-9) +61*a(n-10) -89*a(n-11) -143*a(n-12) -109*a(n-13) +52*a(n-14) +11*a(n-15) -7*a(n-16) +3*a(n-17) for n>18.
EXAMPLE
Some solutions for n=5
..0..1..0. .0..1..1. .0..0..0. .0..1..0. .0..0..0. .0..1..0. .0..1..0
..0..1..0. .0..1..1. .0..0..0. .0..1..0. .0..0..0. .0..1..0. .0..1..0
..0..0..0. .1..1..1. .0..0..0. .0..0..0. .0..1..1. .1..1..1. .0..0..0
..1..0..1. .0..1..1. .0..1..1. .0..1..0. .0..0..0. .1..0..1. .1..0..0
..1..0..1. .0..1..1. .0..1..1. .0..1..0. .0..0..0. .1..0..1. .1..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 11 2018
STATUS
approved