OFFSET
1,1
COMMENTS
Row 7 of A246479.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 3*a(n-1) +5*a(n-2) -23*a(n-3) -4*a(n-4) +76*a(n-5) -28*a(n-6) -140*a(n-7) +98*a(n-8) +154*a(n-9) -154*a(n-10) -98*a(n-11) +140*a(n-12) +28*a(n-13) -76*a(n-14) +4*a(n-15) +23*a(n-16) -5*a(n-17) -3*a(n-18) +a(n-19).
EXAMPLE
Some solutions for n=4
..1....0....4....2....1....2....4....1....0....2....3....0....2....3....3....4
..0....0....3....4....1....4....1....1....2....1....3....3....3....0....2....1
..0....2....3....1....1....3....1....1....3....0....0....0....3....0....0....2
..2....1....3....1....2....3....1....2....3....0....3....2....0....0....3....4
..1....1....0....1....0....3....4....0....3....0....3....3....2....1....0....1
..1....1....0....1....0....3....4....1....4....1....3....3....0....0....2....1
..1....4....0....1....3....4....1....0....3....0....3....4....0....2....0....1
..4....4....2....1....0....2....2....2....2....1....0....4....3....0....0....2
..1....1....0....1....0....4....1....0....3....2....3....4....3....1....3....1
..2....2....1....0....3....4....0....3....0....0....0....2....3....1....3....0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Aug 27 2014
STATUS
approved