OFFSET
1,1
COMMENTS
Column 5 of A268766.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 4*a(n-1) +28*a(n-2) -62*a(n-3) -314*a(n-4) +78*a(n-5) +867*a(n-6) +6*a(n-7) -859*a(n-8) +46*a(n-9) +215*a(n-10) -8*a(n-11) -16*a(n-12)
EXAMPLE
Some solutions for n=4
..1..0..1..0..0. .1..0..0..0..1. .1..0..0..0..0. .0..0..0..0..0
..0..0..0..0..0. .0..0..1..0..1. .0..0..1..0..1. .0..0..0..0..0
..1..0..0..0..0. .0..0..0..0..0. .0..1..0..0..0. .0..1..0..1..0
..0..1..0..0..1. .1..0..0..0..1. .0..0..0..1..0. .1..0..0..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 13 2016
STATUS
approved