OFFSET
1,1
COMMENTS
Column 1 of A252254
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 2*a(n-2) +7*a(n-3) -a(n-4) -11*a(n-5) -19*a(n-6) +4*a(n-7) +21*a(n-8) +26*a(n-9) -4*a(n-10) -18*a(n-11) -19*a(n-12) +a(n-13) +7*a(n-14) +7*a(n-15) -a(n-17) -a(n-18) for n>25
EXAMPLE
Some solutions for n=4
..1..0..3....3..3..3....3..0..1....2..0..0....1..3..0....1..1..0....0..0..2
..0..1..3....0..1..3....3..0..1....3..2..3....0..3..1....0..0..2....3..3..2
..1..0..3....1..0..3....2..2..0....3..0..1....0..3..1....0..0..2....1..1..0
..0..1..3....3..3..3....3..0..1....2..2..0....1..3..0....1..1..0....0..0..2
..1..0..3....0..1..3....3..2..3....3..0..1....1..3..0....3..3..2....0..0..2
..3..3..3....1..0..3....2..0..0....3..2..3....0..3..1....0..0..2....1..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 16 2014
STATUS
approved