OFFSET
1,1
COMMENTS
Column 1 of A209593
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..30
FORMULA
a(n) = 2 ^ (2*n-(n modulo 2)) * 6 ^ ((n*n-2*n+(n modulo 2))/4)
EXAMPLE
Some solutions for n=3
..0..1..0....1..0..0....1..0..0....1..1..1....0..0..1....0..0..0....1..1..1
..1..1..0....0..0..0....0..0..0....0..1..1....1..0..0....1..1..0....0..1..1
..0..0..1....1..0..0....0..0..1....1..0..1....0..1..0....0..1..0....1..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 10 2012
STATUS
approved