OFFSET
1,1
COMMENTS
Column 2 of A237167
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 15*a(n-1) -49*a(n-2) -250*a(n-3) +1567*a(n-4) +391*a(n-5) -13821*a(n-6) +7384*a(n-7) +58596*a(n-8) -39520*a(n-9) -137336*a(n-10) +78264*a(n-11) +179256*a(n-12) -67104*a(n-13) -119232*a(n-14) +20736*a(n-15) +31104*a(n-16)
EXAMPLE
Some solutions for n=5
..2..1..0....2..1..0....0..1..1....1..2..1....1..0..1....1..1..2....2..1..0
..1..2..1....1..0..1....1..2..2....1..0..1....1..0..1....0..2..1....2..1..0
..0..1..0....0..1..2....1..0..0....1..2..1....0..1..2....2..0..1....1..0..1
..2..1..2....1..0..1....1..2..2....2..1..0....2..1..0....0..2..1....2..1..0
..2..1..2....1..0..1....1..0..0....2..1..2....1..0..1....1..1..0....1..0..1
..0..1..0....2..1..0....1..2..2....0..1..2....0..1..2....2..0..1....1..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 04 2014
STATUS
approved