OFFSET
1,1
COMMENTS
Column 3 of A282399.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 5*a(n-1) +5*a(n-2) +21*a(n-3) -29*a(n-4) +7*a(n-5) -61*a(n-6) +25*a(n-7) -62*a(n-8) +4*a(n-9).
Empirical: G.f.: -x*(8 +17*x -x^2 -25*x^3 -54*x^4 -36*x^5 -37*x^6 -58*x^7 +4*x^8) / ( -1 +5*x +5*x^2 +21*x^3 -29*x^4 +7*x^5 -61*x^6 +25*x^7 -62*x^8 +4*x^9 ). - R. J. Mathar, Feb 28 2017
EXAMPLE
Some solutions for n=4
..1..1..1. .1..0..1. .0..0..0. .0..0..1. .0..0..0. .1..1..1. .0..0..0
..1..0..0. .0..0..1. .0..1..0. .1..1..0. .0..0..0. .1..0..0. .0..0..0
..0..1..1. .1..1..0. .0..1..1. .0..0..0. .0..0..0. .1..0..0. .0..0..1
..0..1..0. .0..1..0. .0..0..0. .1..0..0. .0..0..1. .1..0..1. .0..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 14 2017
STATUS
approved