OFFSET
1,1
COMMENTS
Column 7 of A243607
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 23*a(n-1) -206*a(n-2) +894*a(n-3) -1814*a(n-4) +902*a(n-5) +1940*a(n-6) -1536*a(n-7) -1306*a(n-8) +394*a(n-9) +526*a(n-10) +162*a(n-11) +21*a(n-12) +a(n-13)
EXAMPLE
Some solutions for n=5
..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0
..1....1....1....0....1....0....1....1....0....1....1....1....1....1....0....1
..2....2....2....1....1....0....2....2....1....2....2....2....2....1....1....2
..3....0....2....2....2....0....3....2....2....3....3....0....2....2....2....3
..3....1....0....2....2....1....0....3....2....1....1....0....3....3....0....1
..3....2....1....3....1....1....2....1....1....0....4....0....1....0....1....0
..4....0....2....3....1....1....2....4....1....4....2....2....1....1....2....2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jun 07 2014
STATUS
approved