OFFSET
1,1
COMMENTS
Column 1 of A236704
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 8*a(n-3) +352*a(n-4) +916*a(n-5) +3728*a(n-6) +10464*a(n-7) +16592*a(n-8) +26464*a(n-9) +20624*a(n-10) +6240*a(n-11) +2048*a(n-12) -5632*a(n-13)
EXAMPLE
Some solutions for n=5
..1..2....2..0....1..1....1..0....2..2....1..0....0..2....2..0....0..1....1..1
..0..0....1..1....2..1....1..0....1..2....1..2....0..2....2..0....2..0....0..1
..2..0....1..0....0..2....1..2....1..2....0..2....1..1....0..1....0..0....1..0
..0..2....2..1....2..0....2..0....0..1....0..0....1..1....1..0....1..1....2..0
..1..0....0..2....2..2....0..0....2..2....1..1....0..0....0..2....2..0....0..2
..1..2....0..2....0..1....1..1....2..1....1..0....2..0....0..2....1..0....2..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 30 2014
STATUS
approved