OFFSET
1,2
COMMENTS
Row 4 of A297224.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 4*a(n-2) +29*a(n-3) +66*a(n-4) +121*a(n-5) +83*a(n-6) -a(n-7) -205*a(n-8) -224*a(n-9) +30*a(n-10) +473*a(n-11) -96*a(n-12) -289*a(n-13) -109*a(n-14) -3*a(n-15) +126*a(n-16) +160*a(n-17) -150*a(n-18) -112*a(n-19) +43*a(n-20) +124*a(n-21) -53*a(n-22) +3*a(n-23) -25*a(n-24) +6*a(n-25) -a(n-26) +a(n-27)
EXAMPLE
Some solutions for n=7
..0..1..0..1..0..0..0. .0..0..0..0..0..0..0. .1..1..0..0..1..1..0
..1..0..1..0..0..0..0. .0..0..0..0..0..0..0. .0..0..0..0..0..0..0
..0..0..0..0..0..0..1. .0..0..1..1..0..0..0. .0..0..1..1..0..1..1
..0..0..1..1..0..1..0. .0..0..0..0..0..0..0. .0..0..0..0..0..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 27 2017
STATUS
approved