OFFSET
1,1
COMMENTS
Row 2 of A281469.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 3*a(n-1) +a(n-2) -6*a(n-3) -2*a(n-4) +4*a(n-5) for n>6
Empirical g.f.: 2*x -x^2*(8-7*x-22*x^2-2*x^3+16*x^4) /(2*x-1) /(2*x^4-3*x^2-x+1) . - R. J. Mathar, May 14 2017
EXAMPLE
Some solutions for n=4
..0..0..0..0. .0..0..1..0. .0..0..1..1. .0..1..0..1. .0..0..1..0
..1..1..1..1. .1..1..0..1. .1..1..0..0. .1..1..0..0. .1..0..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 22 2017
STATUS
approved