OFFSET
1,2
COMMENTS
Row 7 of A281400.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 4*a(n-1) -6*a(n-2) +6*a(n-3) -7*a(n-4) +6*a(n-5) -3*a(n-6) +4*a(n-7) -7*a(n-8) +6*a(n-9) -4*a(n-10) +4*a(n-11) -2*a(n-12) -a(n-14) +2*a(n-15) -a(n-16) for n>31
EXAMPLE
Some solutions for n=4
..0..0..1..0. .0..0..1..1. .0..0..1..0. .0..0..1..0. .0..1..1..0
..0..1..1..0. .1..0..1..0. .1..1..0..1. .0..1..1..0. .0..0..1..1
..0..1..0..0. .0..0..1..1. .0..1..0..1. .1..0..1..0. .1..0..1..0
..0..1..0..1. .1..1..0..0. .0..0..0..1. .1..0..1..0. .0..0..1..0
..1..1..0..0. .0..1..0..1. .0..1..0..1. .0..1..0..1. .1..1..0..1
..0..0..1..0. .1..1..0..1. .0..1..0..0. .0..1..0..1. .0..1..0..1
..1..0..1..1. .0..0..1..1. .1..1..1..0. .1..1..0..0. .1..1..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 21 2017
STATUS
approved