OFFSET
1,4
COMMENTS
Column 2 of A281563.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 9*a(n-1) -24*a(n-2) +9*a(n-3) +18*a(n-4) +45*a(n-5) -41*a(n-6) -36*a(n-7) -18*a(n-8) +36*a(n-9) +12*a(n-10) -8*a(n-12)
EXAMPLE
All solutions for n=4
..0..0. .0..1. .0..1. .0..1. .0..0. .0..1
..0..0. .0..0. .0..0. .1..1. .1..1. .1..1
..0..0. .0..0. .0..0. .1..1. .1..1. .1..1
..1..1. .1..0. .0..1. .1..0. .1..1. .0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 24 2017
STATUS
approved