OFFSET
1,1
COMMENTS
Column 5 of A268995.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 26*a(n-1) -241*a(n-2) +994*a(n-3) -2060*a(n-4) +2218*a(n-5) -1201*a(n-6) +290*a(n-7) -25*a(n-8) for n>9
EXAMPLE
Some solutions for n=4
..0..1..0..0..1. .0..1..0..0..0. .0..1..0..1..1. .0..1..0..0..0
..0..1..0..0..1. .0..0..0..0..1. .0..1..0..0..0. .0..0..1..0..0
..1..0..1..0..0. .1..0..0..0..1. .0..0..1..0..0. .1..0..1..1..0
..1..0..1..0..1. .0..1..0..0..0. .0..0..1..0..0. .0..0..0..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 17 2016
STATUS
approved