OFFSET
1,1
COMMENTS
Column 3 of A299886.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 2*a(n-1) +3*a(n-2) +13*a(n-3) -27*a(n-4) -25*a(n-5) -51*a(n-6) +69*a(n-7) +57*a(n-8) +44*a(n-9) +75*a(n-10) +9*a(n-11) -109*a(n-12) -88*a(n-13) -49*a(n-14) -51*a(n-15) +19*a(n-16) +20*a(n-17) +2*a(n-18) for n>19
EXAMPLE
Some solutions for n=5
..0..0..0. .0..1..0. .0..0..0. .0..0..1. .0..1..1. .0..0..1. .0..0..1
..0..0..0. .0..1..0. .0..0..0. .0..0..0. .1..1..1. .0..0..1. .0..0..1
..1..1..1. .0..0..0. .0..0..1. .0..0..0. .1..1..1. .0..1..1. .1..1..1
..1..1..1. .0..0..0. .0..0..0. .0..1..0. .1..1..1. .0..0..1. .0..0..1
..1..1..0. .0..0..0. .1..0..1. .0..1..0. .1..1..1. .0..0..1. .0..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 21 2018
STATUS
approved