OFFSET
1,1
COMMENTS
Column 2 of A249233
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 2*a(n-1)
EXAMPLE
Some solutions for n=9
..1....0....0....1....1....1....0....1....1....0....1....0....1....0....1....0
..1....2....2....1....0....1....1....0....1....1....1....2....2....1....0....1
..0....2....1....2....0....0....2....0....1....1....1....0....2....1....1....2
..2....2....0....1....0....2....1....1....2....1....0....1....1....1....2....0
..0....0....0....1....0....2....2....1....2....1....1....1....1....0....2....1
..1....2....2....1....0....2....2....2....1....0....1....0....1....2....1....1
..0....0....0....1....2....1....0....1....1....0....1....0....0....2....1....0
..2....2....1....2....2....1....0....2....0....1....1....0....0....2....1....1
..2....2....2....1....0....2....2....1....2....2....0....0....2....0....0....1
..0....2....2....2....0....0....2....0....2....1....1....0....1....1....2....0
..0....2....1....0....1....1....1....1....2....0....1....1....0....1....2....2
..1....0....1....1....0....0....0....0....1....1....1....1....1....2....2....0
..0....2....0....1....1....0....2....0....0....2....1....0....1....2....1....0
..1....2....1....2....2....1....0....0....1....2....1....0....0....2....0....1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Oct 23 2014
STATUS
approved