OFFSET
1,2
COMMENTS
Column 3 of A299821.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 6*a(n-1) +4*a(n-2) -39*a(n-3) -35*a(n-4) +109*a(n-5) +37*a(n-6) -129*a(n-7) +69*a(n-8) +95*a(n-9) -110*a(n-10) +6*a(n-11) -20*a(n-12) -28*a(n-13) +6*a(n-14) for n>16
EXAMPLE
Some solutions for n=5
..0..0..0. .0..0..0. .0..0..0. .0..1..1. .0..0..0. .0..0..0. .0..0..0
..0..0..1. .0..0..0. .0..0..0. .0..0..1. .0..0..0. .0..1..0. .0..0..0
..1..1..1. .0..0..0. .0..0..0. .1..1..1. .0..0..0. .1..1..1. .0..0..0
..1..1..1. .0..0..0. .0..1..1. .1..1..1. .0..1..1. .1..1..1. .1..1..1
..1..1..1. .0..0..0. .1..1..0. .1..1..1. .1..1..1. .1..1..1. .0..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 19 2018
STATUS
approved