OFFSET
1,1
COMMENTS
Column 4 of A282647.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 2*a(n-1) +16*a(n-2) +45*a(n-3) +16*a(n-4) -2*a(n-5) -51*a(n-6) -35*a(n-7) -23*a(n-8) +7*a(n-9).
Empirical: G.f.: -x*(13+50*x+53*x^2+11*x^3-52*x^4-86*x^5-58*x^6-16*x^7+7*x^8) /(-1+2*x+16*x^2+45*x^3+16*x^4-2*x^5-51*x^6-35*x^7-23*x^8+7*x^9) . - R. J. Mathar, Mar 02 2017
EXAMPLE
Some solutions for n=4
..0..0..0..0. .0..0..1..0. .0..0..1..0. .1..0..1..1. .0..1..0..1
..0..0..0..1. .0..1..0..0. .0..0..0..1. .0..0..0..0. .1..0..0..1
..1..0..0..0. .0..0..0..0. .1..0..0..0. .0..0..0..0. .0..0..0..0
..1..0..1..1. .1..0..1..0. .0..1..0..0. .0..1..0..0. .0..1..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 20 2017
STATUS
approved