OFFSET
1,3
COMMENTS
Row 3 of A281563.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 6*a(n-1) -15*a(n-2) +26*a(n-3) -45*a(n-4) +66*a(n-5) -73*a(n-6) +78*a(n-7) -78*a(n-8) +56*a(n-9) -36*a(n-10) +24*a(n-11) -8*a(n-12) for n>20
EXAMPLE
Some solutions for n=4
..0..1..1..0. .0..1..1..1. .0..1..1..0. .0..1..0..1. .0..0..1..1
..1..0..1..1. .0..0..0..0. .1..0..0..1. .0..0..1..1. .0..0..1..1
..1..0..0..0. .1..1..1..0. .0..0..1..1. .1..0..0..1. .0..1..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 24 2017
STATUS
approved