OFFSET
1,1
COMMENTS
Column 3 of A299814.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 3*a(n-1) +3*a(n-2) +17*a(n-3) -59*a(n-4) -28*a(n-5) -32*a(n-6) +159*a(n-7) +115*a(n-8) +5*a(n-9) -25*a(n-10) -90*a(n-11) -105*a(n-12) -175*a(n-13) +66*a(n-14) +5*a(n-15) +8*a(n-16) +6*a(n-17) for n>18
EXAMPLE
Some solutions for n=5
..0..0..0. .0..0..0. .0..0..0. .0..0..1. .0..1..0. .0..1..0. .0..0..0
..0..0..0. .0..0..0. .0..0..0. .0..0..1. .1..1..1. .1..1..1. .0..0..0
..1..1..1. .0..0..0. .0..0..0. .1..1..1. .1..1..1. .1..1..1. .0..0..0
..1..1..1. .1..1..1. .1..0..1. .1..1..1. .1..1..1. .1..1..1. .0..0..0
..1..1..1. .1..1..1. .1..0..1. .1..1..1. .1..1..1. .0..1..0. .1..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 19 2018
STATUS
approved