OFFSET
1,1
COMMENTS
Column 3 of A299689.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 2*a(n-1) +7*a(n-2) +20*a(n-3) -29*a(n-4) -87*a(n-5) -34*a(n-6) +86*a(n-7) +190*a(n-8) -8*a(n-9) -55*a(n-10) -38*a(n-11) +69*a(n-12) -71*a(n-13) -34*a(n-14) +30*a(n-15) for n>17
EXAMPLE
Some solutions for n=5
..0..1..0. .0..0..1. .0..1..1. .0..0..0. .0..0..1. .0..1..1. .0..1..1
..1..1..1. .0..0..1. .1..1..1. .0..0..0. .0..0..1. .1..1..1. .1..1..1
..1..1..0. .0..0..0. .0..1..1. .0..1..0. .1..1..1. .1..1..1. .0..1..0
..1..1..1. .1..1..0. .1..1..1. .0..0..0. .1..1..1. .0..0..0. .1..1..1
..0..1..1. .1..1..0. .1..1..1. .0..0..0. .0..1..0. .0..0..0. .1..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 16 2018
STATUS
approved