OFFSET
1,2
COMMENTS
Column 4 of A280810.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 10*a(n-1) -39*a(n-2) +72*a(n-3) -57*a(n-4) +12*a(n-5) -31*a(n-6) +61*a(n-7) +39*a(n-8) -148*a(n-9) +58*a(n-10) +72*a(n-11) +2*a(n-12) -92*a(n-13) -33*a(n-14) +142*a(n-15) -25*a(n-16) -90*a(n-17) +22*a(n-18) +50*a(n-19) +3*a(n-20) -47*a(n-21) +5*a(n-22) +30*a(n-23) -12*a(n-24) -9*a(n-25) +6*a(n-26) +a(n-27) -a(n-28) for n>36
EXAMPLE
Some solutions for n=4
..0..0..1..0. .0..1..0..0. .0..1..0..1. .0..0..1..0. .0..0..0..0
..0..1..0..1. .1..0..1..1. .0..1..0..1. .1..0..0..1. .1..1..1..1
..0..1..0..0. .0..0..0..0. .1..1..0..0. .0..1..1..1. .0..0..1..0
..1..0..1..1. .1..1..1..1. .0..0..1..1. .1..0..0..0. .1..0..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 08 2017
STATUS
approved