OFFSET
1,2
COMMENTS
Column 3 of A304704.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = a(n-1) +2*a(n-2) +10*a(n-3) -a(n-4) -20*a(n-5) -48*a(n-6) -31*a(n-7) +56*a(n-8) +107*a(n-9) +109*a(n-10) -30*a(n-11) -92*a(n-12) -70*a(n-13) -9*a(n-14) -35*a(n-15) -32*a(n-16) -4*a(n-17) for n>20
EXAMPLE
Some solutions for n=5
..0..1..1. .0..0..1. .0..1..0. .0..1..0. .0..1..1. .0..1..1. .0..1..1
..0..0..0. .1..1..1. .1..0..0. .0..1..0. .1..0..1. .0..0..0. .1..0..1
..0..1..1. .0..0..1. .0..0..0. .1..1..1. .0..0..1. .0..0..0. .1..1..0
..0..1..1. .0..0..1. .0..0..1. .1..1..1. .0..1..1. .1..0..1. .1..0..0
..0..0..0. .1..1..1. .0..1..0. .1..0..1. .1..0..1. .1..0..1. .0..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, May 17 2018
STATUS
approved