OFFSET
1,1
COMMENTS
Column 2 of A260767
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 6*a(n-3) +6*a(n-4) +2*a(n-5) -6*a(n-6) -18*a(n-7) -18*a(n-8) -8*a(n-9) +2*a(n-10) +21*a(n-11) +23*a(n-12) +10*a(n-13) +11*a(n-14) -5*a(n-15) -8*a(n-16) -a(n-17) -4*a(n-18) +a(n-20) for n>23
EXAMPLE
Some solutions for n=4
..0..0..0..1....0..1..0..0....0..0..1..1....0..1..0..0....1..0..0..1
..1..0..0..1....0..1..0..0....0..0..0..0....0..0..0..0....0..0..0..1
..0..0..0..0....0..0..0..1....1..1..0..0....0..0..0..0....0..0..0..0
..0..0..0..0....0..0..0..1....0..0..0..0....1..0..0..1....1..0..0..0
..1..1..0..0....1..0..0..0....0..0..0..0....1..0..0..1....0..0..0..1
..0..0..0..0....0..0..0..0....1..1..0..0....0..0..0..0....0..0..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jul 30 2015
STATUS
approved