OFFSET
1,1
COMMENTS
Column 4 of A296320.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = a(n-1) +6*a(n-2) +29*a(n-3) +30*a(n-4) +61*a(n-5) +9*a(n-6) +73*a(n-7) -93*a(n-8) +134*a(n-9) -201*a(n-10) +173*a(n-11) -179*a(n-12) +107*a(n-13) -a(n-14) -30*a(n-15) -15*a(n-16) +22*a(n-17) -3*a(n-18) -2*a(n-19) -a(n-20) +a(n-21).
EXAMPLE
Some solutions for n=5
..0..0..0..0. .1..0..0..0. .0..0..0..0. .0..0..1..0. .0..0..0..0
..0..0..1..0. .1..0..0..1. .0..0..0..0. .0..1..0..0. .1..0..0..0
..0..1..0..0. .0..1..0..1. .0..1..0..1. .0..0..1..1. .1..0..0..0
..0..0..1..1. .1..0..0..0. .1..0..0..1. .1..0..0..0. .0..0..0..0
..0..0..0..0. .0..1..1..0. .0..0..0..0. .1..0..1..1. .0..0..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 10 2017
STATUS
approved