OFFSET
1,1
COMMENTS
Column 3 of A267735.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 12*a(n-1) -30*a(n-2) -120*a(n-3) +455*a(n-4) +576*a(n-5) -2142*a(n-6) -1980*a(n-7) +3180*a(n-8) +1980*a(n-9) -2142*a(n-10) -576*a(n-11) +455*a(n-12) +120*a(n-13) -30*a(n-14) -12*a(n-15) -a(n-16)
EXAMPLE
Some solutions for n=4
..0..0..1....1..0..1....1..1..1....0..0..0....0..1..0....1..0..1....1..1..1
..0..1..0....1..1..1....1..0..0....0..1..0....0..0..1....0..1..1....0..0..0
..1..1..0....0..0..0....1..0..1....1..0..0....0..0..0....0..0..1....1..1..1
..1..1..0....1..1..1....0..0..0....1..0..1....0..0..1....0..1..0....0..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 20 2016
STATUS
approved