OFFSET
1,1
COMMENTS
Row 7 of A250691
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..22
FORMULA
Empirical: a(n) = 30*a(n-1) -415*a(n-2) +3514*a(n-3) -20386*a(n-4) +85924*a(n-5) -272198*a(n-6) +661180*a(n-7) -1244717*a(n-8) +1822478*a(n-9) -2068955*a(n-10) +1802474*a(n-11) -1181760*a(n-12) +563888*a(n-13) -184752*a(n-14) +37152*a(n-15) -3456*a(n-16)
EXAMPLE
Some solutions for n=1
..2..2....2..1....0..0....0..1....0..1....2..0....0..0....0..0....2..0....2..0
..0..0....2..1....0..0....2..3....0..1....2..2....2..2....2..2....2..0....2..1
..0..0....2..2....1..2....1..2....0..1....2..2....3..3....2..2....2..0....2..2
..2..2....2..2....0..1....2..3....2..3....1..1....2..2....3..3....3..2....3..3
..1..1....1..1....0..1....0..1....0..1....1..1....0..0....2..2....1..0....1..1
..0..0....2..2....2..3....0..2....1..3....1..1....0..1....0..0....2..1....1..3
..2..3....2..3....1..2....0..2....0..2....1..1....0..1....1..1....2..1....0..2
..0..1....0..1....1..3....1..3....0..2....0..0....0..3....0..2....2..1....1..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 26 2014
STATUS
approved