OFFSET
1,2
COMMENTS
Column 4 of A297733.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = a(n-1) +a(n-2) +31*a(n-3) -6*a(n-4) +18*a(n-5) -153*a(n-6) +7*a(n-7) -67*a(n-8) +243*a(n-9) -4*a(n-10) -3*a(n-11) -89*a(n-12) +29*a(n-13) +67*a(n-14) -25*a(n-15) -44*a(n-16) -4*a(n-17) +12*a(n-18) +3*a(n-19)
EXAMPLE
Some solutions for n=7
..0..0..0..0. .0..1..1..0. .0..1..1..0. .0..0..0..0. .0..1..1..0
..0..0..0..0. .0..1..1..0. .1..1..0..0. .1..1..0..0. .1..0..0..1
..0..0..0..0. .0..0..0..0. .0..0..0..0. .0..1..1..0. .0..1..1..0
..0..0..1..0. .0..1..0..0. .0..1..0..0. .0..0..0..0. .0..0..0..0
..0..1..0..1. .1..1..1..0. .1..1..1..0. .1..1..1..1. .0..1..1..0
..0..1..1..0. .0..0..0..0. .1..0..1..0. .1..1..1..1. .1..0..0..1
..0..0..1..1. .0..0..0..0. .0..1..0..0. .0..0..0..0. .0..1..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 04 2018
STATUS
approved