OFFSET
1,1
COMMENTS
Column 2 of A206542.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 14*a(n-1) -49*a(n-2) -96*a(n-3) +814*a(n-4) -820*a(n-5) -2734*a(n-6) +5904*a(n-7) +127*a(n-8) -8794*a(n-9) +6847*a(n-10) -336*a(n-11) -1164*a(n-12) +288*a(n-13) for n>17.
EXAMPLE
Some solutions for n=4:
..0..2..2....2..1..2....2..0..0....1..1..0....2..1..0....1..2..2....0..1..0
..0..1..2....2..1..2....0..0..2....0..0..0....2..1..0....2..2..1....1..2..1
..0..1..1....1..1..1....0..2..2....0..1..1....2..1..1....0..2..2....2..1..0
..1..1..2....0..0..0....2..2..0....1..1..0....1..1..0....0..2..0....0..2..1
..1..2..2....1..1..1....0..0..0....1..0..0....0..0..0....2..2..2....1..0..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 09 2012
STATUS
approved