OFFSET
1,2
COMMENTS
Column 3 of A305367.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 2*a(n-1) +5*a(n-2) +2*a(n-3) -16*a(n-4) -14*a(n-5) -27*a(n-7) +32*a(n-8) +52*a(n-9) +43*a(n-10) +27*a(n-11) -34*a(n-12) -25*a(n-13) -12*a(n-14) +13*a(n-15) +a(n-16) -20*a(n-17) -8*a(n-18)
EXAMPLE
Some solutions for n=5
..0..0..1. .0..1..0. .0..1..1. .0..0..0. .0..1..1. .0..1..0. .0..0..1
..1..0..0. .1..1..1. .0..1..0. .0..1..0. .1..1..0. .0..0..0. .0..1..0
..0..0..0. .0..1..1. .1..0..0. .1..1..1. .1..1..1. .1..0..0. .1..1..0
..1..0..1. .0..0..1. .1..1..1. .1..1..1. .1..0..0. .0..0..1. .0..0..1
..1..1..1. .1..0..1. .1..0..1. .0..1..0. .0..0..1. .1..1..1. .1..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, May 31 2018
STATUS
approved