OFFSET
1,1
COMMENTS
Column 6 of A267788.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 2*a(n-1) +10*a(n-2) -22*a(n-3) -44*a(n-4) +110*a(n-5) +110*a(n-6) -330*a(n-7) -165*a(n-8) +660*a(n-9) +132*a(n-10) -924*a(n-11) +924*a(n-13) -132*a(n-14) -660*a(n-15) +165*a(n-16) +330*a(n-17) -110*a(n-18) -110*a(n-19) +44*a(n-20) +22*a(n-21) -10*a(n-22) -2*a(n-23) +a(n-24) for n>27
EXAMPLE
Some solutions for n=3
..1..1..0..1..1..1....0..1..0..0..1..1....0..0..1..0..1..1....0..1..1..1..1..0
..0..0..1..0..0..0....1..0..1..0..1..0....1..1..0..1..1..0....0..0..0..0..1..0
..0..0..1..1..1..1....1..1..1..1..0..1....1..0..1..0..0..0....1..0..1..0..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 20 2016
STATUS
approved