OFFSET
1,2
COMMENTS
Column 3 of A298328.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 3*a(n-1) +7*a(n-2) -a(n-3) -23*a(n-4) -16*a(n-5) -17*a(n-6) -85*a(n-7) -11*a(n-8) +187*a(n-9) +53*a(n-10) -118*a(n-11) +5*a(n-12) -24*a(n-13) -87*a(n-14) -25*a(n-15) +28*a(n-16) +16*a(n-17) -2*a(n-18) -a(n-19) for n>20
EXAMPLE
Some solutions for n=7
..0..0..1. .0..0..1. .0..1..1. .0..0..0. .0..0..1. .0..1..1. .0..1..1
..0..1..1. .0..1..1. .0..0..1. .0..1..0. .0..0..0. .1..1..0. .0..0..1
..0..0..1. .0..0..1. .0..1..1. .0..0..0. .1..1..1. .1..0..0. .1..0..0
..1..0..1. .1..0..1. .0..0..1. .0..1..0. .0..1..1. .1..1..0. .1..1..0
..0..0..1. .1..1..1. .0..0..1. .0..1..1. .1..1..0. .0..0..1. .0..1..1
..1..0..1. .0..0..0. .0..1..1. .1..0..0. .0..0..0. .0..1..1. .0..0..1
..1..1..1. .0..0..1. .0..0..1. .1..1..0. .1..0..1. .0..0..1. .0..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 17 2018
STATUS
approved